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This page contains the most recently asked technical questions and answers in the Napino Auto & Electronics.

All of the questions listed below were collected by students recently placed at Napino Auto & Electronics.

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**Ques:- 252 can be expressed as a product of primes as**

**Ques:- The sum of the first four primes is**

**Recent Answer**: :

the sum of first 4 primes numbers =2+3+5+7 =>17

**Ques:- Find (7x + 4y ) / (x-2y) if x/2y = 3/2 ?**

**Recent Answer**: :

x/2y=3/2…

therefore

2x=6y

x=3y

therefor

=21y+4y/3y-2y

=25y/y

=25..

there answer=25

so for the above question, we don’t have an option…so answer

is Data Insufficient..

**Ques:- 6 cats kill 6 rats in 6 minutes .how many cats will be needed to kill 100 rats in 50 minutes?**

**Recent Answer**: :

one cat kill one rat six minutes

so 1 cat kill 100 rat willbe needed 6*100=600minutes

then 100 rates kill 50minutes means then 600/50=12

so the answer is 12

**Ques:- There are 9 balls of equal size and same weight(they look similar) except 1. How many weights required to find the dissimilar ball using a weighing balance?**

**Recent Answer**: :

Here is the solution to the given version of the puzzle (9 balls, one is heavier, need to identify oddball), where we label the balls A, B, …, I:

1. Weigh ABC versus DEF.

Scenario a: If these (1) balance, then we know the oddball is one of G, H, I.

2. Weigh G versus H.

Scenario a.i: If these (2) balance, the oddball is I.

Scenario a.ii: If these (2) do not balance, the heavier one is the oddball.

Scenario b: If these (1) do not balance, then the oddball is on the heavier side. For simplicity, assume the ABC side is heavier, so the oddball is one of A, B, C.

2. Weigh A versus B.

Scenario b.i: If these (2) balance, the oddball is C.

Scenario b.ii: If these (2) do not balance, the heavier one is the oddball.

answer is maximum of 2.

**Ques:- A person meets a train at a railway station coming daily at a particular time. One day he is late by 25 minutes, and he meets the train 5 k.m. before the station. If his speed is 12 kmph, what is the speed of the train.**

**Recent Answer**: :

Ans: 60 kph

Suppose Person meets the train everyday at 3 PM at Station A.

His speed is 12kph.

So normally he reaches 5 km before the meeting point (pt B) at (5/12 hr = 25 min before) 2:35PM.

But if he is late by 30 min, then he will reach that point (pt B) by 3:05 PM.

Train is traveling at its normal speed so it covers the distance of 5 Km in 5 min starting from Station A and reaches the meeting point (pt B) at 3:05 PM.

So speed of the train is 5KM/5min = 60 kph.

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**Ques:- If 13 = 13w/(1-w) ,then (2w)2 =?**

**Recent Answer**: :

1

**Ques:- 1. All G’s are H’s 2. All G’s are J’s or K’s 3. All J’s and K’s are G’s 4. All L’s are K’s 5. All N’s are M’s 6. No M’s are G’s**

**Ques:- 2598Successive discounts of 20% and 15% are equal to a single discount of (a) 30%(b) 32% (c) 34% (d) 35% (e) 36**

**Ques:- What is the position you are hiring for?**

**Ques:- About your current job profile?**

**Ques:- What is your qualification and work experience?**

**Ques:- What kind of person you are?**

**Ques:- There are 4 people in a closed room and you are waiting outside to enter into the room. You can enter only when one of them opens the door. The probability that somebody will open the door is 1/2. Now what is the probability that the door will be opened so that you can go inside?**

**Recent Answer**: :

The probability that no one opens the door would be

0.5×0.5×0.5×0.5= 0.0625

So, the probability that atleast one opens the door is 1-0.0625= 0.9375

**Ques:- Before where did you worked?**

**Ques:- How many hydra is needed for lifting the D-Shakle of 20 ton capacity ?**

**Ques:- You spend 21 dollars on vegetables at the store. You buy carrots, onions and celery. The celery cost half the cost of the onions. The onions cost have the cost of the carrots. How much did the onions cost?**

**Recent Answer**: :

Actually

carrots=> $12

celery => $3

**Ques:- A tank is filled in 5 hours by three pipes X, Y and Z. The pipe Z is twice as fast as Y and Y is twice as fast as X. How much time will pipe X alone take to fill the tank?**

**Recent Answer**: :

35 hours

**Ques:- A train leaves Delhi at 9 a.m. at a speed of 30 kmph. Another train leaves at 2 p.m. at a speed of 40 kmph on the same day and in the same direction. How far from Delhi, will the two trains meet?**

**Recent Answer**: :

At 680Km

**Ques:- Out of 15 consecutive numbers, 2 are chosen at random. The probability that they are both odd or both prime is?**

**Recent Answer**: :

The answer cannot be determined as there is a particular formula where the consecutive numbers start.

Recent Answer: Added by Ompal Singh On 2022-08-24 17:03:01:B