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Technonix Infosystem Interview Questions and Answers
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Ques:- A can do a piece of work in 12 days. He worked for 15 days and then B completed the remaining work in 10 days. Both of them together will finish it in.
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Ques:- A car averages 55 mph for the first 4 hours of a trip and averages 70 mph for each additional hour. The average speed for the entire trip was 60 mph. How many hours long is the trip?
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Ques:- If n and p are both odd numbers, which of the following is an even number?
A. n + p
B. n + P + 1
C. np + 2
D. np
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Ques:- Subhash starts a business by investing Rs.25000. 6 months later Aditya joins him by investing Rs.15000. After another 6 months Aditya invests an additional amount of Rs.15000. At the end of 3 yeas they earn a profit of Rs.247000. What is Aditya’s share in the profit?
A. Rs. 105000
B. Rs. 111500
C. Rs. 130000
D. Rs. 170000
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Ques:- There are n urns and m balls. If we put 3 balls in each urn 3 balls will be excess. If we put 4 balls in each urn 1 urn will be excess. Find no. of Urns (or) Balls?
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Ques:- A starts from a place at 11.00 am and travels at a speed of 4 kmph , B starts at 1.00 pm and travels with speeds of 1 kmph for 1 hr , 2 kmph for the next hr , 3 kmph for the next hr and so on. At wht time will B catch up with A ?
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Ques:- How will you manage security of v vip person
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Ques:- For which post you have came here?
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Ques:- In an examination, 35% candidates failed in one subject and 42% failed in another subject while 15% failed in both the subjects. If 2500 candidates appeared at the examination, how many passed in either subject but not in both?
A. 325
B. 1170
C. 1175
D. 2125
Right Answer:

We are given:

  • Total candidates = 2500

  • Failed in subject A = 35%

  • Failed in subject B = 42%

  • Failed in both subjects = 15%

We are asked:
👉 How many candidates passed in either subject but not in both?

Let’s solve step-by-step with explanation and a Venn Diagram concept.


🧠 Step 1: Understand what is being asked

We are to find the number of students who failed in exactly one subject — that is:

  • Failed in A only

  • OR

  • Failed in B only

This is equivalent to:

 (Only A) + (Only B) = (Failed in A but not in B) + (Failed in B but not in A)

Use formula for set operations:

  • Failed only in A = Failed in A − Failed in both

  • Failed only in B = Failed in B − Failed in both


🔢 Step 2: Calculate numbers

  • Failed in A = 35% of 2500 = 0.35 × 2500 = 875

  • Failed in B = 42% of 2500 = 0.42 × 2500 = 1050

  • Failed in both = 15% of 2500 = 0.15 × 2500 = 375

Now:

  • Failed only in A = 875 − 375 = 500

  • Failed only in B = 1050 − 375 = 675

So,

Passed in either subject but not in both = 500 + 675 = 1175


✅ Final Answer:
1175 candidates passed in either subject but not in both.

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Ques:- Given a dart board of radius `r’, and if a dart is thrown on the board which always falls inside assuming uniform distribution, find the expected distance from the center for the point where the dart lands.
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Ques:- Are you mobile ? How you will manage your profesional life with your resposibility for your parents ?
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Ques:- 1. A plane travels 695km with wind and 498km aginst the wind in same time.The speed of wind is 21km/hr. Find the speed of plane?
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Ques:- If the sides of a cube are in the ratio 4:3. What is the ratio of their diagonals?
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Ques:- Tell me a little bit about your background?
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Ques:- X, Y, Z enter into a partnership investing Rs. 35,000, Rs. 45,000 and Rs. 55,000 respectively. The respective shares of X, Y, Z in annual profit of Rs. 40,500 are:
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Ques:- A, B and C enter into a partnership. A invests some some at the beginning, B invests double the amount after 6 months and C invests thrice the amount after 8 months. If the annual profit be Rs.27,000, C’s share is
A. Rs. 11,250
B. Rs. 10,800
C. Rs. 9000
D. Rs. 8625
Right Answer:

We are given:

  • A invests some amount (let’s say ₹x) at the beginning

  • B invests double the amount = ₹2x after 6 months

  • C invests triple the amount = ₹3x after 8 months

  • Total annual profit = ₹27,000

  • We are to find C’s share in the profit

Let’s solve step-by-step using the concept of investment × time.

🟢 Step 1: Calculate the effective capital contribution (investment × time)

  • A: ₹x for 12 months ⇒ x × 12 = 12x

  • B: ₹2x for 6 months ⇒ 2x × 6 = 12x

  • C: ₹3x for 4 months (since 12 − 8 = 4 months) ⇒ 3x × 4 = 12x

So the ratio of their capital contributions is:

A : B : C = 12x : 12x : 12x = 1 : 1 : 1

That means profit is shared equally among A, B, and C.

🟢 Step 2: Divide the total profit

Total profit = ₹27,000
Each partner gets 1/3rd:

C’s share=13×27000=₹9000\text{C’s share} = \frac{1}{3} × 27000 = ₹9000

✅ Final Answer:
C’s share of the profit is ₹9,000.

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Ques:- A man buys two articles for Rs.1980 each and he gains 10% on the first and loses 10% on the next. Find his total gain or loss percent?
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Ques:- Surface area of two spheres are in the ratio 1:4 what is the ratio of their volumes?
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Ques:- Find out the wrong number in the series:

1, 3, 10, 21, 64, 129, 356, 777
A. 356
B. 129
C. 64
D. 10