delta techops Recruitment Process, Interview Questions & Answers

Delta TechOps interview involves a technical round focused on aerospace and maintenance knowledge, followed by behavioral interviews. The process tests candidates’ problem-solving abilities and adherence to safety and operational standards.
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About delta techops

Company Description

Delta TechOps is a leading provider of aviation maintenance, repair, and overhaul (MRO) services, primarily serving Delta Air Lines and other airlines globally. With a commitment to excellence, safety, and innovation, Delta TechOps operates with state-of-the-art facilities and a highly skilled workforce to ensure the highest standards of aircraft maintenance. The work culture at Delta TechOps emphasizes teamwork, integrity, and a focus on customer satisfaction. Employees are encouraged to take ownership of their work, pursue continuous improvement, and develop their skills in a supportive environment. The job environment is dynamic and fast-paced, reflecting the ever-evolving nature of the aviation industry, while also prioritizing employee well-being through comprehensive training programs and competitive benefits.

Aircraft Maintenance Technician Interview Questions

Q1: What is your experience with aircraft systems and components?

I have over five years of experience working on various aircraft systems, including hydraulic, electrical, and avionics systems. I have completed numerous inspections and repairs, ensuring compliance with FAA regulations and manufacturer specifications.

Q2: How do you prioritize safety in your work?

Safety is my top priority. I always adhere to established safety protocols and guidelines. I perform thorough pre-work checks and use personal protective equipment (PPE). Additionally, I encourage open communication with my team to address any safety concerns.

Q3: Can you describe a challenging repair you have completed?

I once worked on a complex hydraulic system failure that required extensive troubleshooting. I methodically tested each component, identified a faulty actuator, and replaced it, restoring the system's functionality within a tight timeline.

Q4: How do you stay updated with the latest aviation technologies?

I regularly attend training sessions and industry seminars, subscribe to aviation journals, and participate in online forums. Continuous learning is essential in this field to keep up with advancements in technology and regulatory changes.

Q5: What tools and equipment are you familiar with?

I am proficient in using various hand tools, power tools, diagnostic equipment, and specialized aviation maintenance software. I am also trained in the use of maintenance tracking systems to document repairs and inspections.

Q6: How do you handle stress and tight deadlines?

I prioritize tasks based on urgency and importance, breaking them down into manageable steps. I maintain open communication with my team, ensuring we work collaboratively to meet deadlines while maintaining quality.

Q7: Why do you want to work for Delta TechOps?

I admire Delta TechOps' commitment to safety and innovation. I am excited about the opportunity to contribute to a respected organization in the aviation industry and further develop my skills in a collaborative environment.

Avionics Technician Interview Questions

Q1: What specific avionics systems have you worked on?

I have experience working on communication, navigation, and surveillance systems, including GPS, radar, and autopilot systems. My role involved both troubleshooting and performing preventive maintenance to ensure optimal performance.

Q2: How do you approach diagnosing avionics issues?

I utilize a systematic approach by reviewing aircraft maintenance logs, conducting visual inspections, and using diagnostic tools to pinpoint the issue. I also consult with colleagues for insights and ideas when needed.

Q3: Describe a time when you had to work under pressure to meet a deadline.

During a scheduled maintenance period, we faced an unexpected avionics malfunction. I prioritized the issue, worked closely with my team to troubleshoot, and we completed the repair in time for the aircraft's next flight, ensuring minimal disruption.

Q4: What safety protocols do you follow when working with electronic systems?

I follow strict safety protocols, including disconnecting power sources, using proper grounding techniques, and wearing appropriate PPE. I also ensure that all work areas are free of hazards and well-organized.

Q5: How do you keep your technical skills up to date?

I actively participate in training programs provided by manufacturers and attend workshops. Additionally, I read technical documentation and stay connected with industry peers to share knowledge and best practices.

Q6: Can you explain the importance of compliance with FAA regulations?

Compliance with FAA regulations is crucial for ensuring the safety and airworthiness of aircraft. It helps maintain high standards of maintenance and reduces the risk of accidents, ultimately protecting passengers and crew.

Q7: Why do you believe you would be a good fit for Delta TechOps?

I am passionate about aviation and have a solid background in avionics. I align with Delta TechOps' values of safety and quality, and I am eager to contribute my skills to a team dedicated to excellence in aircraft maintenance.

Aircraft Inspector Interview Questions

Q1: What is your experience with aircraft inspections?

I have conducted pre-flight, routine, and annual inspections on various aircraft types. My role included assessing airworthiness and ensuring compliance with regulatory standards.

Q2: How do you ensure thoroughness in your inspections?

I follow a detailed inspection checklist, meticulously reviewing each component and system. I also take notes and document findings to ensure that any issues are addressed promptly and accurately.

Q3: Describe a situation where you found a significant issue during an inspection.

I discovered a crack in the fuselage during a routine inspection. I immediately reported the issue, and we grounded the aircraft for further evaluation. This proactive approach ensured the safety of the aircraft and its passengers.

Q4: What tools do you use for inspections?

I use a variety of tools such as borescopes, multimeters, and specialized inspection gauges. I also rely on digital documentation systems to record and track inspection findings efficiently.

Q5: How do you handle discrepancies found during inspections?

I document any discrepancies thoroughly and communicate them to the maintenance team and management. I ensure that corrective actions are taken according to established procedures and that follow-ups are performed.

Q6: What role does communication play in your position?

Communication is essential in my role to ensure that all stakeholders are aware of inspection findings and any necessary actions. I collaborate closely with maintenance teams and management to uphold safety standards.

Q7: Why are you interested in joining Delta TechOps?

I am impressed by Delta TechOps' reputation for safety and quality in aviation maintenance. I believe my experience and commitment to excellence align perfectly with the company's mission, and I am eager to contribute to your team.

delta techops Interview Guide

Company Background and Industry Position

Delta TechOps is the aircraft maintenance, repair, and overhaul (MRO) division of Delta Air Lines, standing as one of the largest and most respected MRO providers in North America. Rooted deeply in Delta’s operational excellence, TechOps supports not only Delta’s own fleet but also services more than 150 external customers worldwide. This broad reach positions it as a critical player in the aviation maintenance industry, which is fiercely competitive and highly regulated.

With aviation evolving rapidly—especially post-pandemic—Delta TechOps has doubled down on investing in advanced technologies, automation, and sustainability. This expansion not only enriches its service capabilities but also demands a steady influx of skilled professionals to keep pace. Understanding this context is key for candidates: you’re not interviewing for just any aviation maintenance job. You’re stepping into a role that influences the safety, efficiency, and technological evolution of one of the world’s biggest airlines.

How the Hiring Process Works

  1. Application Submission: Delta TechOps typically invites candidates to apply through the Delta careers portal or third-party job boards. Because this division focuses on specialized roles, applications often require detailed resumes reflecting aviation credentials, certifications, and relevant experience.
  2. Initial Screening: Recruiters sift through applications to ensure candidates meet the basic eligibility criteria—think certifications like FAA Airframe & Powerplant (A&P) licenses or specific engineering degrees. This step weeds out those not qualified, saving time for both parties.
  3. Preliminary Assessment: Depending on the job, a candidate might face an online skills assessment or a phone interview with a recruiter. This stage tests fundamental technical knowledge or clarifies candidate experience, setting the stage for more rigorous interviews.
  4. Onsite or Virtual Interviews: Candidates who clear earlier rounds are invited for in-depth interviews. This stage often includes separate technical interviews, HR discussions, and sometimes practical tests or simulations.
  5. Reference and Background Checks: Once interviews conclude, the hiring team conducts thorough background verifications. Given the safety-sensitive nature of aviation roles, this step is non-negotiable.
  6. Offer Stage: Successful candidates receive an offer detailing salary, benefits, and role specifics. Negotiations can occur here, especially for senior positions or highly specialized roles.

Why such a layered process? Aviation maintenance demands precision and reliability. Delta TechOps cannot afford shortcuts that might compromise safety or efficiency. Each phase filters candidates, ensuring only the most competent and trustworthy professionals move forward.

Interview Stages Explained

Technical Interview

This is the cornerstone of the Delta TechOps selection process. Expect a rigour that reflects the complexity of aircraft systems. Interviewers dive deep into your hands-on experience with aircraft maintenance, troubleshooting, and adherence to FAA regulations. They’re looking beyond textbook knowledge; practical savvy, problem-solving under pressure, and an understanding of compliance protocols matter most.

One candidate described feeling grilled on specific engine diagnostics and tooling standards. That’s by design—Delta TechOps needs assurance you can handle real-world faults, not just recite manuals. Additionally, hypothetical scenarios are common: “If you find a crack in a critical component during a routine check, what immediate steps do you take?” These questions reveal your judgment and prioritization skills.

HR Interview

The HR round addresses cultural fit, work ethic, and behavioral tendencies. Delta TechOps values teamwork because maintenance often requires collaboration under tight deadlines. Recruiters may explore your past experiences working in teams, managing conflicts, or adapting to sudden changes. Speaking candidly about challenges you've overcome can be an asset here.

Salary expectations and logistical questions arise here too. Don’t be surprised if the discussion leans into availability for rotating shifts or overtime, reflecting the 24/7 operational demands of aviation maintenance.

Practical Assessment or Simulation

For many hands-on roles, there’s a practical test. This could be a timed exercise inspecting an engine model, identifying faults, or demonstrating tool handling. Such tests exist because paper qualifications rarely capture one’s true aptitude for physically demanding, detail-intensive tasks.

Managerial Interview

Sometimes, particularly for senior or supervisory roles, candidates meet with team leads or managers. This stage focuses on leadership style, decision-making capabilities, and your understanding of department workflows. Managers want to see that you’re not only technically strong but can lead teams, manage resources, and contribute to continuous improvement.

Examples of Questions Candidates Report

  • “Can you explain the process for troubleshooting hydraulic system failures on a Boeing 737?”
  • “Describe a time when you identified a maintenance issue others overlooked. What was the impact?”
  • “How do you ensure compliance with FAA safety regulations during inspections?”
  • “What are your strategies for prioritizing multiple urgent maintenance tasks during peak operational hours?”
  • “Tell me about a conflict you experienced during a maintenance project and how you resolved it.”
  • “What do you know about Delta TechOps’ recent technology upgrades?”
  • “Are you comfortable working flexible shifts, including nights and weekends?”
  • “Walk me through your experience with digital maintenance tracking systems.”

Eligibility Expectations

Delta TechOps holds the bar quite high, and rightfully so given the safety-sensitive nature of the work. Typically, Airframe and Powerplant (A&P) certification is mandatory for mechanic roles. Engineering positions usually require at least a bachelor's degree in aerospace, mechanical, or electrical engineering.

Experience counts—candidates with 3-5 years in aviation MRO environments are preferred, especially when applying for mid-level roles. For entry-level positions, internships or apprenticeships with documented exposure to maintenance routines can make a difference.

Aside from credentials, the company evaluates your capacity for ongoing learning. The aviation sector is dynamic, and Delta TechOps is keen on professionals who keep pace with evolving technologies—digital inspection tools, predictive maintenance software, and more.

Common Job Roles and Departments

Delta TechOps covers a broad spectrum of job roles, each with unique hiring nuances:

  • Aircraft Maintenance Technician (A&P Mechanics): Hands-on specialists responsible for routine and unscheduled repairs.
  • Avionics Technicians: Focused on electronic systems, communications, and navigation equipment.
  • Structural Repair Technicians: Experts in airframe integrity, corrosion control, and composite materials.
  • Engine and Powerplant Technicians: Specialized in engine overhauls, diagnostics, and performance tuning.
  • Quality Assurance Specialists: Ensure compliance with FAA and company safety standards.
  • Engineering and Technical Services: Involved in design, modifications, and technical documentation.
  • Management and Supervisory Roles: Oversee teams, workflow, and regulatory adherence.

Each department has subtly different recruitment focuses—for instance, avionics roles might emphasize software and electronics knowledge, while structural teams prioritize metallurgy and fabrication skills.

Compensation and Salary Perspective

RoleEstimated Salary
Aircraft Maintenance Technician$55,000 - $75,000 per year
Avionics Technician$60,000 - $80,000 per year
Structural Repair Technician$58,000 - $78,000 per year
Engine and Powerplant Technician$65,000 - $85,000 per year
Quality Assurance Specialist$60,000 - $90,000 per year
Engineering Roles$70,000 - $110,000 per year
Supervisory/Managerial$85,000 - $130,000 per year

Salary ranges vary based on experience, location, and role complexity. Benefits also play a significant part—healthcare, retirement plans, and travel perks often add value beyond the base pay.

Interview Difficulty Analysis

Delta TechOps doesn't aim to trip you up but expects a level of expertise that matches the high stakes of aviation safety. The technical interviews, in particular, can feel intense due to their detailed nature. Candidates often report that the pressure grows not just from technical depth but also from the practical “what-if” scenario questions.

Compared to other airlines or independent MROs, Delta TechOps tends to be more structured and systematic in the recruitment rounds, reflecting its corporate ethos. If you’re coming from a smaller or less regulated environment, this can feel a bit daunting initially.

However, the staff conducting interviews are usually experienced and professional, aiming to assess whether you're a good fit rather than trying to catch you off guard. The practical assessments, while challenging, are straightforward for those with solid hands-on experience.

Preparation Strategy That Works

  • Deep Dive into Delta TechOps’ Operations: Understand the company’s fleet composition, maintenance philosophy, and recent technological initiatives. This demonstrates genuine interest and helps tailor your responses.
  • Review FAA Regulations and Safety Protocols: These form the backbone of your technical discussions. Be ready to reference specific rules and explain how you’ve applied them.
  • Practice Scenario-Based Questions: Think about real-life maintenance challenges you’ve faced—or imagine plausible ones—and prepare structured answers outlining your problem-solving approach.
  • Refresh Hands-On Skills: If a practical test is likely, review tool handling, inspection checklists, and diagnostics procedures. Mock practice can build confidence.
  • Prepare Behavioral Stories: Use the STAR method (Situation, Task, Action, Result) to narrate experiences around teamwork, conflict resolution, and adaptability.
  • Clarify Your Shift and Work Environment Preferences: Be honest about your flexibility. Delta TechOps operates round-the-clock, and your willingness to adapt impacts your fit.
  • Mock Interviews: Engage with peers or mentors in the aviation maintenance field to simulate interview conditions and receive feedback.

Work Environment and Culture Insights

Working at Delta TechOps means being part of a culture that balances precision with urgency. The environment is fast-paced but grounded in safety—there’s no room for cutting corners when passenger lives depend on your work.

Many employees highlight the camaraderie that develops in hangars and workshops. Despite the pressure, teamwork is palpable, and knowledge-sharing among peers is common. Leadership tends to support continuous learning, encouraging certifications and training.

That said, shift work and occasional overtime are par for the course. Candidates who thrive here often have a strong sense of discipline and resilience, as well as an ability to stay calm under pressure.

Career Growth and Learning Opportunities

Delta TechOps is not static—it actively promotes upskilling through internal training programs and partnerships with technical schools. Employees can advance into specialized technical roles, supervisory positions, or cross-train into related departments like engineering or quality assurance.

The company’s scale provides exposure to diverse aircraft types and cutting-edge maintenance technologies, from predictive analytics to augmented reality tools. For ambitious candidates, the pathway to growth is clear but demands commitment and continuous learning.

In comparison to smaller MROs, Delta TechOps offers more structured career ladders and the chance to influence global aviation safety standards.

Real Candidate Experience Patterns

From conversations with past applicants, a few themes emerge. Candidates often feel the initial phone screening is quite thorough, with recruiters probing certifications and experience closely. Many note that the technical interview requires brushing up on both theory and practical know-how.

Some recount that the practical assessments were the real test of mettle—being timed and observed adds a layer of stress. But those well-prepared find it manageable.

On a personal note, candidates appreciate the transparency of Delta TechOps recruiters, who usually communicate timelines clearly and give feedback after interviews. This fosters a respectful candidate experience.

However, those without the right certifications or insufficient hands-on experience often find it challenging to progress beyond initial rounds.

Comparison With Other Employers

When stacked up against competitors like Southwest Airlines’ MRO division or independent firms like AAR Corp, Delta TechOps is generally regarded as more rigorous in its hiring approach. The scale and brand reputation mean the bar is consistently higher.

Smaller organizations might offer quicker hiring cycles but often lack the breadth of aircraft types and technological resources. Delta TechOps candidates should expect a more formalized recruitment process with multiple rounds, reflecting the company’s commitment to quality.

Salary-wise, Delta tends to be competitive, though not always the highest-paying; benefits and career longevity often tilt the scales in its favor.

Expert Advice for Applicants

Here’s the no-nonsense takeaway. Don’t underestimate the power of preparation—technical knowledge, safety protocols, and practical skills are your ticket through the door. But just as important is cultural fit. Show that you’re adaptable, team-oriented, and ready for the demanding schedule that aviation maintenance entails.

Be upfront if there are gaps in your experience but demonstrate a willingness to learn and grow. That attitude can often compensate for initial shortcomings.

Also, network if possible. Connecting with current or former Delta TechOps employees can give you insights and even referrals that smooth the way.

Frequently Asked Questions

What certifications does Delta TechOps require for maintenance roles?

Most technician roles require FAA Airframe & Powerplant (A&P) certification. For specialized positions, additional certifications like Inspection Authorization (IA) or avionics-specific credentials may be necessary.

How many interview rounds should I expect?

Typically, candidates undergo 3-4 rounds, including a phone screening, technical interview, HR interview, and often a practical assessment. Senior roles may have additional managerial interviews.

Is prior experience mandatory?

While entry-level positions exist, most roles prefer candidates with 2-5 years of relevant MRO experience. Hands-on practice and familiarity with FAA regulations are crucial.

Does Delta TechOps hire for remote or work-from-home roles?

Due to the hands-on nature of maintenance jobs, most positions require on-site presence. Some engineering or administrative roles might offer hybrid options, but these are exceptions.

What is the typical salary range for entry-level technicians?

Entry-level aircraft maintenance technicians usually start between $55,000 and $60,000 annually, with room to grow based on performance and tenure.

How can I best prepare for the technical interview?

Review FAA regulations, aircraft systems (especially those in Delta’s fleet), and maintenance procedures. Practice situational problem-solving and brush up on your hands-on skills where possible.

Final Perspective

Landing a job at Delta TechOps is no walk in the park, but it’s a rewarding challenge. The interview process is deliberately designed to filter for technical excellence, safety mindset, and cultural alignment—qualities that the aviation industry cannot compromise on. With thoughtful preparation, realistic expectations, and a passion for aircraft maintenance, candidates can navigate the recruitment rounds successfully.

Remember, this isn’t just about joining an airline’s maintenance team. It’s about becoming a guardian of millions of passengers’ safety and a contributor to one of aviation’s most trusted operations. If you’re ready to commit to that responsibility, Delta TechOps could be the perfect place to build your aerospace career.

delta techops Interview Questions and Answers

Updated 21 Feb 2026

Project Manager Interview Experience

Candidate: Michael T.

Experience Level: Senior

Applied Via: Recruiter

Difficulty:

Final Result:

Interview Process

3 rounds

Questions Asked

  • Describe your experience managing aerospace projects.
  • How do you handle cross-functional teams?
  • Explain a project that did not go as planned and your response.

Advice

Highlight leadership skills and experience managing complex projects under tight deadlines.

Full Experience

The interviews included HR, technical, and leadership rounds. They focused on project management methodologies and conflict resolution. The interviewers were engaging and interested in my real-world experiences.

Supply Chain Analyst Interview Experience

Candidate: Emily R.

Experience Level: Mid-level

Applied Via: LinkedIn

Difficulty:

Final Result: Rejected

Interview Process

3 rounds

Questions Asked

  • Explain your experience with supply chain optimization.
  • How do you handle supplier delays?
  • Describe a time you improved inventory management.

Advice

Focus on quantitative examples and be prepared for scenario-based questions.

Full Experience

The first round was a phone screening, followed by a technical interview with case questions. The last round was with the department head. The questions were practical but I felt I could have given stronger examples.

Quality Assurance Specialist Interview Experience

Candidate: David K.

Experience Level: Senior

Applied Via: Company website

Difficulty: Hard

Final Result:

Interview Process

4 rounds

Questions Asked

  • How do you implement quality control in aerospace manufacturing?
  • Describe your experience with regulatory compliance.
  • Give an example of a quality issue you resolved.
  • How do you handle audits and inspections?

Advice

Prepare detailed examples of quality assurance processes and regulatory knowledge.

Full Experience

The process was thorough, including HR, technical, and managerial interviews. They emphasized regulatory knowledge and problem-solving skills. The final round was a case study presentation. Overall, a challenging but fair process.

Maintenance Technician Interview Experience

Candidate: Sarah L.

Experience Level: Entry-level

Applied Via: Referral

Difficulty: Easy

Final Result: Rejected

Interview Process

2 rounds

Questions Asked

  • What experience do you have with aircraft maintenance?
  • How do you handle working under pressure?
  • Describe a time you followed safety protocols strictly.

Advice

Gain more hands-on experience and familiarize yourself with specific maintenance procedures used by the company.

Full Experience

The first round was a phone interview with HR, focusing on background and motivation. The second was an in-person technical interview with practical questions. Despite being friendly, I lacked some specific experience they were looking for.

Aerospace Engineer Interview Experience

Candidate: John M.

Experience Level: Mid-level

Applied Via: Online job portal

Difficulty:

Final Result:

Interview Process

3 rounds

Questions Asked

  • Explain your experience with aircraft systems.
  • Describe a challenging engineering problem you solved.
  • How do you ensure compliance with aviation safety standards?

Advice

Brush up on aerospace engineering fundamentals and be ready to discuss past projects in detail.

Full Experience

The interview process started with an HR screening, followed by a technical round focusing on aerospace systems. The final round was with the engineering manager, emphasizing problem-solving and safety compliance. The interviewers were professional and the questions relevant to the role.

View all interview questions

Frequently Asked Questions in delta techops

Have a question about the hiring process, company policies, or work environment? Ask the community or browse existing questions here.

Common Interview Questions in delta techops

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Q: 9 cards are there. You have to arrange them in a 3*3 matrix. Cards are of 4 colors. They are red, yellow, blue and green. Conditions for arrangement: one red card must be in first row or second row. 2 green cards should be in 3rd column. Yellow cards must be in the 3 corners only. Two blue cards must be in the 2nd row. At least one green card in each row.

Q: A rich man died. In his will, he has divided his gold coins among his 5 sons, 5 daughters and a manager. According to his will: First give one coin to manager. 1/5th of the remaining to the elder son.Now give one coin to the manager and 1/5th of the remaining to second son and so on..... After giving coins to 5th son, divided the remaining coins among five daughters equally.All should get full coins. Find the minimum number of coins he has?

Q: Consider a pile of Diamonds on a table. A thief enters and steals 1/2 of the total quantity and then again 2 extra from the remaining. After some time a second thief enters and steals 1/2 of the remaining+2. Then 3rd thief enters and steals 1/2 of the remaining+2. Then 4th thief enters and steals 1/2 of the remaining+2. When the 5th one enters he finds 1 diamond on the table. Find out the total no. of diamonds originally on the table before the 1st thief entered.

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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.) (i) B gives four to A.(ii) C gives 3 to E. How much did A,B,C,E give to D?

Q: There is a room with a door (closed) and three light bulbs. Outside the room there are three switches, connected to the bulbs. You may manipulate the switches as you wish, but once you open the door you can't change them. Identify each switch with its bulb.

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: 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: Give two dice - one is a standard dice, the other is blank (nothing painted on any of the faces). The problem is to paint the blank dice in such a manner so that when you roll both of them together, the sum of both the faces should lie between 1 and 12. Numbers from 1-12 (both inclusive) equally likely.

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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: An escalator is descending at constant speed. A walks down and takes 50 steps to reach the bottom. B runs down and takes 90 steps in the same time as A takes 10 steps. How many steps are visible when the escalator is not operating. 

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