*Hello and welcome to ***exampundit**. Here is a set of Quantitative Aptitude Quiz for NICL AO Mains 2017.

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__Rules:__

1. Answer the following questions in the comment box.

2. Do not give solutions unless you are asked to.

3. Solve it honestly.

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5. Answers will be updated after 5 pm today.

Explanations and Answers

2. D

3. B

4. B

5. E

6. D

P(E)=n(e)/n(s)=4C1Ã—3C1Ã—5C1/12C3=3/11

7. D

4boys and 6girls finish in 24 days.

In one day, 4boys + 6girls = 1/24 of task.

If a girl is half as efficient as boy

4b + 3b = 1/24, 7b = 1/24, b = 1/168

6g + 2b = 3b + 2b = 5b, 5m will take 1685 days = 33.6 days

If a girl is as efficient as a man

4b + 6g finish in 24 days.

10b finish 1/24 of task in a day

6g + 2b = 8b, 8b will take 240/8 = 30 days to finish the task.

So, the range = 30 to 33.6 days. The new team will take 30 to 33.6 days to finish the task

8. D

The 475 litres is filled in 19 hours by the two pipes when they are opened simultaneously.

Therefore, rate of water flow by A and B,

A + B = 47519 = 25 litres/hourâ€¦â€¦â€¦â€¦.(1)

Let pipe B was opened for t hours

Then, pipe A was opened for t + 5 hours

A x (t+5) + B x t = 475

(A + B) x t + 5A = 475

25t + 5A = 475

=> 5t + A = 95

Now, using options

t = 16 => 5 x 16 + A = 95 => A = 15

9. D

To earn a profit of 40% at Rs 20/litre,

Cost price = 20/1.4=100/7

Therefore,

Milk: Water = 100/7:40/7 = 5:2

So, in 4 litres of water, 10 litres of milk would be required. Resultant mixture = 14 litres

10. D

Present age of Daizy =5years

Present age of Radika =5âˆ’2=3

Let present age of Anika =x

Then, present age of Radika =xâˆ’6/18

xâˆ’6/18=3â‡’xâˆ’6=3Ã—18=54â‡’x=54+6=60

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