About parexel
Company Description
Parexel is a leading global biopharmaceutical services organization that specializes in providing comprehensive drug development and regulatory consulting services. Established in 1983, Parexel has built a reputation for delivering high-quality solutions to clients in the pharmaceutical, biotechnology, and medical device industries. The company is dedicated to advancing the development of new therapies through its expertise in clinical trials, regulatory compliance, and market access. At Parexel, the work culture is characterized by a strong commitment to collaboration, innovation, and continuous improvement. Employees thrive in a dynamic environment that values diversity, teamwork, and a passion for improving patient outcomes. The job environment encourages professional growth and development, fostering a culture of learning and adaptability.
Clinical Research Associate (CRA) Interview Questions
Q1: What is your experience with monitoring clinical trials?
I have over three years of experience monitoring clinical trials across various therapeutic areas. In my previous role, I was responsible for ensuring compliance with study protocols, managing site visits, and maintaining data integrity.
Q2: How do you handle conflicts with site staff during a trial?
I approach conflicts with open communication and a problem-solving mindset. I listen to their concerns, clarify expectations, and work collaboratively to resolve the issue while ensuring that the study remains on track.
Q3: What steps do you take to ensure regulatory compliance?
I stay updated on regulatory guidelines and company SOPs. During trial monitoring, I conduct thorough reviews of documentation and processes to ensure they meet regulatory standards, and I provide training to site staff as necessary.
Q4: Describe a challenging situation you faced in a clinical trial and how you overcame it.
In one trial, we faced delays in patient recruitment. I organized additional outreach efforts with the site staff and collaborated with the marketing team to improve awareness about the study, resulting in a significant increase in enrollment within a few months.
Q5: How do you prioritize your tasks when managing multiple studies?
I utilize project management tools to track timelines and deliverables. I prioritize tasks based on deadlines and the impact on study progress, ensuring that I allocate time effectively to meet the needs of each trial.
Regulatory Affairs Specialist Interview Questions
Q1: What is your understanding of the regulatory approval process?
The regulatory approval process involves multiple stages, including preclinical research, clinical trials, and submission of New Drug Applications (NDAs) or Biologics License Applications (BLAs). I have experience in preparing regulatory submissions and ensuring compliance with agency requirements.
Q2: How do you stay informed about changes in regulatory guidelines?
I regularly review updates from regulatory agencies such as the FDA and EMA, attend industry conferences, and participate in webinars. I also belong to professional organizations that provide resources and networking opportunities.
Q3: Can you provide an example of a successful submission you managed?
I led the submission of an NDA for a novel drug. I coordinated with cross-functional teams to compile comprehensive data, ensuring that all sections met regulatory standards. The submission was accepted without major queries.
Q4: How do you handle tight deadlines for regulatory submissions?
I prioritize tasks based on urgency and delegate responsibilities where appropriate. I maintain clear communication with team members to ensure everyone understands their roles and deadlines, allowing us to work efficiently.
Q5: Describe your experience with post-market surveillance.
I have managed post-marketing surveillance projects, including adverse event reporting and monitoring product safety. I ensure timely reporting to regulatory agencies and analyze data to identify trends or issues that may arise.
Project Manager Interview Questions
Q1: What project management methodologies are you familiar with?
I am proficient in Agile and Waterfall methodologies. I have successfully led projects using Agile by promoting iterative development and continuous feedback, as well as Waterfall for projects with clear, defined stages.
Q2: How do you manage stakeholder expectations throughout a project?
I maintain regular communication with stakeholders, providing updates on project status and any potential risks. I ensure that expectations are aligned by discussing project goals and deliverables at the outset and addressing any concerns promptly.
Q3: Can you describe a time you had to manage a project with limited resources?
In a previous project, we faced budget constraints. I re-evaluated project priorities, optimized resource allocation, and identified areas where we could reduce costs without compromising quality. This approach allowed us to successfully complete the project on time.
Q4: How do you ensure quality in your project deliverables?
I implement quality assurance processes at each project phase, including regular reviews and testing. I also encourage team members to adhere to best practices and seek feedback to continuously improve our deliverables.
Q5: What tools do you use for project management?
I utilize tools like Microsoft Project, Asana, and Trello for tracking project timelines and tasks. These tools help enhance collaboration, streamline communication, and ensure that everyone is aligned on project objectives.
Data Analyst Interview Questions
Q1: What experience do you have with statistical analysis software?
I have extensive experience using SAS and R for statistical analysis, data manipulation, and visualization. I have utilized these tools to analyze clinical trial data and generate reports for stakeholders.
Q2: How do you handle missing data in a dataset?
I assess the extent and pattern of missing data to determine the best approach. Depending on the context, I may use imputation methods, or sensitivity analyses, or decide to exclude certain cases if appropriate, ensuring transparency in my analysis.
Q3: Can you describe a project where you used data analysis to drive decision-making?
In my previous role, I analyzed patient outcomes from a clinical trial to identify factors influencing treatment efficacy. The insights led to adjustments in the treatment protocol, resulting in improved patient responses.
Q4: How do you ensure the accuracy and integrity of your data?
I implement validation checks and cross-referencing techniques to verify data accuracy. Additionally, I document my data sources and analysis methods to maintain transparency and facilitate auditing.
Q5: Describe your experience with data visualization tools.
I am skilled in using Tableau and Power BI for creating interactive dashboards and visual representations of data. These tools help convey complex data insights clearly and effectively to non-technical stakeholders.
Company Background and Industry Position
parexel is a major player in the clinical research and contract research organization (CRO) sector, specializing in biopharmaceutical development and regulatory consulting. Founded decades ago, it has grown into one of the top-tier CROs globally, partnering with pharmaceutical giants and biotechnology firms to accelerate drug development. Their expertise spans across clinical trial management, data analytics, medical communications, and post-market surveillance.
In the context of the highly competitive CRO landscape, parexel’s reputation rests on its emphasis on quality and regulatory compliance. It’s a company that thrives at the crossroads of science, technology, and patient-centric services, which means its recruitment approach reflects a blend of scientific rigor and operational efficiency.
Understanding parexel means appreciating how the company fits within an industry where precision, compliance, and innovation are paramount. This perspective is crucial when preparing for roles here, because the interview process is designed to filter for candidates who not only have technical competence but also align culturally with a demanding yet rewarding work environment.
How the Hiring Process Works
- Application Screening: parexel receives thousands of applications for various job roles. The initial phase focuses on filtering candidates based on eligibility criteria such as relevant qualifications, certifications, and experience level. This is often automated but backed by recruiter reviews for key positions.
- Recruiter Phone Call: A brief conversation to verify basic details, candidate motivation, and communication skills. It’s not just a formality; this stage helps recruiters assess if there’s a mutual fit before proceeding.
- Technical Interview Round: Depending on the role—be it clinical operations, data management, or regulatory affairs—the candidate undergoes a detailed technical interview. This often involves case studies, problem-solving questions, or scenario-based queries that reflect actual job challenges.
- HR Interview: Beyond technical skills, parexel places a strong emphasis on cultural fit and behavioral competencies. This stage explores teamwork, adaptability, ethical considerations, and career aspirations.
- Managerial or Panel Interview: For mid to senior-level roles, a session with hiring managers or a panel is customary. This evaluates strategic thinking, leadership potential, and deeper domain expertise.
- Offer and Negotiation: Upon selection, candidates receive an offer detailing compensation packages, typically aligning with industry salary ranges but flexible based on experience and skill set.
Each step exists to ensure that candidates not only bring the right skills but will thrive in parexel’s high-stakes, compliance-driven environment. Candidates often find that the process is thorough but fair, with recruiters transparent about timelines and feedback.
Interview Stages Explained
Initial Recruiter Screening
At this point, parexel wants to confirm the basics. It might feel like a routine call, but it’s your chance to demonstrate enthusiasm and clarity about why you're interested in the company and the specific role. Recruiters are looking for clear, concise communication—skills which are vital in clinical research roles.
Technical Interview
This is arguably the crux of the selection process. For example, a clinical research associate (CRA) candidate might face questions about monitoring visit plans, GCP guidelines, or managing adverse event reporting. Data management roles may require SQL queries or knowledge of CDISC standards. What’s behind these questions? parexel wants to ensure candidates can handle real-world tasks and think critically under pressure.
Expect scenario-based questions that test problem-solving abilities. It’s less about rote learning and more about applying knowledge pragmatically. This aligns with parexel’s dynamic project environments where unforeseen challenges are routine.
HR Interview
This stage explores your soft skills and company alignment. Interviewers probe into your ability to work in cross-functional teams, handle stressful deadlines, and maintain ethical standards. parexel’s projects often involve tight regulatory scrutiny, so integrity and communication are non-negotiable.
You’ll also discuss your career goals. parexel values candidates who show long-term commitment and adaptability, given the evolving nature of pharmaceutical regulations and technology.
Managerial or Panel Interview
Reserved for senior or specialized roles, this round assesses strategic insight and leadership. You might be asked how you’ve led projects, resolved conflicts, or influenced outcomes in prior experience. The panel format can feel intense, but it's designed to gauge your ability to think on your feet and collaborate effectively with multiple stakeholders.
Examples of Questions Candidates Report
- For Clinical Roles: “How would you handle a protocol deviation discovered during a site visit?”
- Data Management: “Explain your experience with data cleaning and validation processes.”
- Regulatory Affairs: “What steps would you take to prepare a submission to the FDA for a new drug application?”
- HR Interview: “Describe a time when you had to work under tight deadlines with a difficult team member.”
- Behavioral: “How do you stay updated with changing regulatory requirements in the pharmaceutical industry?”
Eligibility Expectations
parexel’s eligibility criteria vary by role but generally include a relevant degree in life sciences, pharmacy, clinical research, or related fields. For technical positions, certifications like ACRP or SOCRA for clinical roles, or SAS and CDISC knowledge for data roles, can significantly bolster your candidacy.
Experience thresholds depend on the job level. Entry-level positions might require internships or 1–2 years in clinical research environments, while mid-level roles often demand 3–5 years of demonstrated project handling.
What’s less obvious but crucial is the expectation for candidates to be familiar with Good Clinical Practice (GCP) guidelines and have a working understanding of global regulatory environments, because parexel operates internationally.
Common Job Roles and Departments
parexel hires across a broad range of functions, including but not limited to:
- Clinical Research Associates (CRAs)
- Clinical Project Managers
- Data Managers and Biostatisticians
- Regulatory Affairs Specialists
- Medical Writers and Communicators
- Pharmacovigilance and Drug Safety Experts
- Quality Assurance Professionals
- IT and Software Development (supporting clinical technologies)
- Business Development and Client Services
Each of these departments has tailored recruitment rounds reflecting the specialized knowledge and skills required. For instance, Clinical Project Manager interviews delve deeply into resource management and risk mitigation, while Medical Writers face rigorous assessments of their regulatory documentation proficiency.
Compensation and Salary Perspective
| Role | Estimated Salary (Annual, USD) |
|---|---|
| Clinical Research Associate | 60,000 – 80,000 |
| Clinical Project Manager | 90,000 – 130,000 |
| Data Manager | 70,000 – 95,000 |
| Regulatory Affairs Specialist | 65,000 – 90,000 |
| Medical Writer | 65,000 – 100,000 |
| Pharmacovigilance Officer | 60,000 – 85,000 |
These figures fluctuate depending on geography, experience level, and market demand. parexel’s compensation tends to be competitive within the CRO industry, often including performance bonuses and other benefits. However, the company’s real appeal for many is the exposure to cutting-edge clinical research projects and global teams rather than just salary.
Interview Difficulty Analysis
Many candidates describe the parexel interview as moderately challenging. The technical rounds are not mere formality—they require concrete knowledge and problem-solving abilities relevant to the role. Unlike some companies where interviews are more behavioral, here the bar is high on your professional expertise.
That said, the HR and managerial interviews lean towards understanding your personality and working style rather than trying to “trip you up.” Candidates often feel that transparency and preparation greatly ease the process. If you come in with a solid understanding of your field and clear examples, the interviews flow smoothly.
Compared to other CROs like IQVIA or ICON, parexel’s process is somewhat more structured but also flexible enough to accommodate diverse roles. This reflects their balance between standardization for quality control and customization per department.
Preparation Strategy That Works
- Start by researching parexel’s core services and recent industry activities—it shows genuine interest.
- Review the latest Good Clinical Practice (GCP) guidelines and any role-specific standards such as ICH E6 for clinical roles or CDISC for data positions.
- Practice answering behavioral questions using the STAR (Situation, Task, Action, Result) technique but keep it natural—don’t memorize.
- For technical rounds, brush up on relevant software tools and regulatory frameworks. Mock case studies help simulate real interview conditions.
- Prepare thoughtful questions to ask your interviewers; this indicates engagement and helps you assess if parexel is the right fit.
- Consider speaking with current or past employees via networking platforms to understand day-to-day realities.
- Plan logistics well to reduce stress: technical setups for virtual interviews, attire, and note organization.
Work Environment and Culture Insights
From what candidates and employees report, parexel fosters a culture that values continuous learning, attention to detail, and collaboration. The company’s global footprint means you often work with diverse teams, which can be both enriching and challenging.
Deadlines are strict, and the regulatory environment unforgiving, so the pace can be intense. Yet, there is typically a supportive atmosphere for professional development and mentoring. People who thrive here usually appreciate structure and have a mindset geared towards quality and compliance without losing sight of innovation.
The hybrid work model is common now, but many roles require onsite presence, especially in clinical operations. The company invests in training programs and encourages participation in industry conferences, reflecting a commitment to employee growth.
Career Growth and Learning Opportunities
parexel’s approach to career development is quite proactive. Employees often have clear pathways for advancement, whether progressing from CRA to project management or branching into specialized scientific advisory roles. The company supports gaining certifications and higher education relevant to the pharmaceutical industry.
Learning is embedded in the culture—on-the-job training, e-learning modules, and cross-functional projects help broaden skills. Because parexel works with varied clients and therapeutic areas, employees get a chance to build diverse portfolios which boosts marketability.
One notable feature is the international exposure. Career mobility across global offices is encouraged, providing a unique advantage for those wanting to deepen their understanding of regional regulatory differences and multinational trial execution.
Real Candidate Experience Patterns
Looking through reviews and testimonials, candidates often remark on the professionalism and clarity of parexel’s recruitment teams. The timelines are reasonably consistent, and feedback—though not always detailed—is generally prompt.
Some report that the technical interviews can be unpredictable, especially when interviewers dig deeper into specific past experiences or ask unexpected scenario questions. This variability means candidates should prepare broadly rather than narrowly.
A common feeling is that parexel values honesty and learning potential, not just perfect answers. If you acknowledge gaps in knowledge but demonstrate eagerness to grow, it is viewed positively.
In contrast, a few candidates mention that the HR interviews sometimes feel scripted. This is common in large organizations but shouldn’t deter you from making an authentic connection.
Comparison With Other Employers
| Aspect | parexel | IQVIA | ICON |
|---|---|---|---|
| Interview Rigour | Moderate to High | High (more data focused) | Moderate |
| Technical Focus | Role tailored with scenario emphasis | Strong data analytics orientation | Operationally centered |
| Candidate Experience | Transparent and timely | Can be lengthier | Generally personable |
| Career Mobility | Global opportunities encouraged | Strong internal mobility | Good but regional |
| Salary Competitiveness | Competitive with bonuses | Comparable | Slightly lower on average |
While each CRO has its nuances, parexel stands out for balancing technical depth with cultural fit, making it a preferred choice for candidates seeking both challenge and career development.
Expert Advice for Applicants
- Don’t underestimate the value of storytelling—real examples from your work experience resonate more than generic answers.
- Focus on understanding the “why” behind questions; interviewers want to see your reasoning and judgement, not just correct responses.
- Keep abreast of industry news and parexel’s latest projects to contextualize your answers and demonstrate motivation.
- Practice technical questions with peers or mentors, especially those who have experience in clinical trials or data management.
- Be ready to discuss ethical dilemmas or compliance scenarios—these are critical in the pharma research field.
- Follow up politely after interviews; it keeps you top of mind and suggests professionalism.
Frequently Asked Questions
How long does the parexel hiring process usually take?
Typically, the entire process spans 3 to 6 weeks, depending on the role and number of recruitment rounds. Some positions with multiple technical and managerial interviews might extend the timeline slightly.
What type of technical interview questions can I expect?
Questions vary by job function but often include scenario-based problem solving, regulatory knowledge, clinical trial methodologies, or data management techniques. Expect practical questions that mimic actual job challenges.
Is previous CRO experience mandatory?
Not always. While prior CRO or pharmaceutical industry experience is preferred for many roles, strong academic credentials and relevant internships can suffice for entry-level positions.
Does parexel provide feedback after interviews?
Feedback is generally limited but recruiters try to communicate the status and, occasionally, high-level pointers when requested.
Are there remote work options available?
Yes, especially for certain administrative, data, or IT roles. However, many clinical operations positions require onsite or hybrid presence due to the nature of clinical trial oversight.
Final Perspective
parexel’s hiring journey reflects its standing as a leader in clinical research: rigorous, multifaceted, and designed to identify professionals who bring both expertise and integrity. It’s a company that demands a lot but rewards with diverse career opportunities and a chance to contribute to life-saving pharmaceutical advancements.
If you’re preparing for a parexel interview, embrace the challenge as a two-way street—it’s as much about them evaluating you as it is about you assessing if their environment fits your ambitions. Deep preparation coupled with authentic communication is your best bet to navigate the selection process successfully.
Remember, behind every recruitment round are people eager to find candidates who can grow and thrive in a complex, impactful industry. Stay curious, confident, and clear—parexel respects that.
parexel Interview Questions and Answers
Updated 21 Feb 2026Biostatistician Interview Experience
Candidate: Anna K.
Experience Level: Senior
Applied Via: Recruiter outreach
Difficulty: Hard
Final Result:
Interview Process
4 rounds
Questions Asked
- Explain your experience with statistical software like SAS or R.
- How do you approach analysis plans for clinical trials?
- Describe a complex statistical problem you solved.
- What are your strategies for communicating results to non-statistical stakeholders?
Advice
Prepare to discuss technical skills in depth and demonstrate clear communication abilities.
Full Experience
The recruiter contacted me first, followed by a phone technical screen. Then two in-depth interviews with the biostatistics team and project leads. The process was thorough but rewarding.
Project Manager Interview Experience
Candidate: Michael B.
Experience Level: Mid-level
Applied Via: Company career portal
Difficulty:
Final Result:
Interview Process
3 rounds
Questions Asked
- How do you manage cross-functional teams?
- Describe your experience with clinical project timelines.
- How do you handle scope changes?
- Tell us about a project that didn’t go as planned and how you handled it.
Advice
Highlight your leadership skills and ability to adapt to changing project requirements.
Full Experience
The interview process included an HR screening, a technical interview with scenario questions, and a final cultural fit interview with senior management.
Regulatory Affairs Specialist Interview Experience
Candidate: Sophia L.
Experience Level: Entry-level
Applied Via: LinkedIn application
Difficulty:
Final Result: Rejected
Interview Process
2 rounds
Questions Asked
- What do you know about regulatory submissions?
- How do you stay updated with regulatory changes?
- Describe a time you managed documentation under tight deadlines.
Advice
Gain more hands-on experience with regulatory submissions and familiarize yourself with industry software tools.
Full Experience
The first round was a phone interview focusing on my educational background and motivation. The second was a video interview with situational questions. I was informed later that they chose a candidate with more direct experience.
Data Manager Interview Experience
Candidate: James T.
Experience Level: Senior
Applied Via: Referral
Difficulty: Hard
Final Result:
Interview Process
4 rounds
Questions Asked
- What data management systems have you used?
- How do you ensure data quality and integrity?
- Describe your experience with CDISC standards.
- Explain how you handle data discrepancies.
Advice
Have detailed examples ready about data management processes and standards compliance.
Full Experience
After a referral, I had an initial HR screening, followed by two technical interviews with the data management team. The final round was a panel interview assessing leadership and problem-solving skills.
Clinical Research Associate Interview Experience
Candidate: Emily R.
Experience Level: Mid-level
Applied Via: Online application via company website
Difficulty:
Final Result:
Interview Process
3 rounds
Questions Asked
- Describe your experience with clinical trial monitoring.
- How do you handle protocol deviations?
- Explain the importance of GCP guidelines.
- Tell us about a challenging patient recruitment scenario you managed.
Advice
Be prepared to discuss specific clinical trial experiences and demonstrate knowledge of regulatory guidelines.
Full Experience
The process started with an online application, followed by a phone screening focusing on my background. The second round was a technical interview with scenario-based questions. The final round was with the hiring manager, discussing team fit and my approach to challenges.
Frequently Asked Questions in parexel
Have a question about the hiring process, company policies, or work environment? Ask the community or browse existing questions here.
Common Interview Questions in parexel
Q: A hare and a tortoise have a race along a circle of 100 yards diameter. The tortoise goes in one directionand the hare in the other. The hare starts after the tortoise has covered 1/5 of its distance and that too leisurely.The hare and tortoise meet when the hare has covered only 1/8 of the distance. By what factor should the hareincrease its speed so as to tie the race?
Q: There are two balls touching each other circumferencically. The radius of the big ball is 4 times the diameter of the small all. The outer small ball rotates in anticlockwise direction circumferencically over the bigger one at the rate of 16 rev/sec. The bigger wheel also rotates anticlockwise at N rev/sec. What is 'N' for the horizontal line from the centre of small wheel always is horizontal.
Q: There are 3 clans in an island - The Arcs who never lie, the Dons who always lie and the Slons who lie alternately with the truth. Once a tourist meets 2 guides who stress that the other is a Slon. They proceed on a tour and see a sports meet. The first guide says that the prizes have been won in the order Don, Arc, Slon. The other says that, the order is Slon, Don, Arc. (the order need not be exact). To which clan did each of the guides and the players belong? ...
Q: 3 policemen and 3 thieves had to cross a river using a small boat. Only two can use the boat for a trip. All the 3 policemen and only 1 thief knew to ride the boat. If 2 thieves and 1 policeman were left behind they would kill him. But none of them escaped from the policemen. How would they be able to cross the river?
Q: 36 people {a1, a2, ..., a36} meet and shake hands in a circular fashion. In other words, there are totally 36 handshakes involving the pairs, {a1, a2}, {a2, a3}, ..., {a35, a36}, {a36, a1}. Then size of the smallest set of people such that the res...
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Q: A light bulb is hanging in a room. Outside of the room there are three switches, of which only one is connected to the lamp. In the starting situation, all switches are 'off' and the bulb is not lit. If it is allowed to check in the room only once.How would you know which is the switch?
Q: There are 3 sticks placed at right angles to each other and a sphere is placed between the sticks . Now another sphere is placed in the gap between the sticks and Larger sphere . Find the radius of smaller sphere in terms of radius of larger sphere.
Q: ABCDE are sisters. Each of them gives 4 gifts and each receives 4 gifts No two sisters give the same combination ( e.g. if A gives 4 gifts to B then no other sisters can give four to other one.)Â (i) B gives four to A.(ii) C gives 3 to E. How much did A,B,C,E give to D?
Q: The egg vendor calls on his first customer and sells half his eggs and half an egg. To the second customer, he sells half of what he had left and half an egg and to the third customer he sells half of what he had then left and half an egg. By the way he did not break any eggs. In the end three eggs were remaining . How many total eggs he was having ?
Q: Every day a cyclist meets a train at a particular crossing .The road is straight before the crossing and both are travelling in the same direction.Cyclist travels with a speed of 10 kmph.One day the cyclist come late by 25 minutes and meets the train 5 km before the crossing.What is the speed of the train?
Q: Tom has three boxes with fruits in his barn: one box with apples, one box with pears, and one box with both apples and pears. The boxes have labels that describe the contents, but none of these labels is on the right box. How can Tom, by taking only one p
Q: A vessel is full of liquid. From the vessel, 1/3rd of the liquid evaporates on the first day. On the second day 3/4th of the remaining liquid evaporates. What fraction of the volume is present at the end of the second day
Q: Jarius and Kylar are playing the game. If Jarius wins, then he wins twice as many games as Kylar. If Jarius loses, then Kylar wins as the same number of games that Jarius wins. How many do Jarius and Kylar play before this match?
Q: Raj has a jewel chest containing Rings, Pins and Ear-rings. The chest contains 26 pieces. Raj has 2 and 1/2 times as many rings as pins, and the number of pairs of earrings is 4 less than the number of rings. How many earrings does Raj have?...
Q: If I walk with 30 miles/hr i reach 1 hour before and if i walk with 20 miles/hr i reach 1 hour late. Find the distance between 2 points and the exact time of reaching destination is 11 am then find the speed with which it walks.
Q: Given a collection of points P in the plane , a 1-set is a point in P that can be separated from the rest by a line, .i.e the point lies on one side of the line while the others lie on the other side. The number of 1-sets of P is denoted by n1(P)....
Q: Jack and his wife went to a party where four other married couples were present. Every person shook hands with everyone he or she was not acquainted with. When the handshaking was over, Jack asked everyone, including his own wife, how many hands they shook?
Q: In a country where everyone wants a boy, each family continues having babies till they have a boy. After some time, what is the proportion of boys to girls in the country? (Assuming probability of having a boy or a girl is the same)
Q: A Man is sitting in the last coach of train could not find a seat, so he starts walking to the front coach ,he walks for 5 min and reaches front coach. Not finding a seat he walks back to last coach and when he reaches there,train had completed 5 miles. what is the speed of the train ?