# NRA CGL (National Recruitment Agency-Combined Graduate Level) Mathematics: Questions 414 - 419 of 425

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## Question number: 414

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MCQ▾

### Question

A and B working together take 7 and 28 less days than A alone and B alone respectively to do a work. The number of days taken by A and B working together to do the work is

### Choices

Choice (4)Response

a.

10

b.

11

c.

14

d.

12

## Question number: 415

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MCQ▾

### Question

The square root of is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 416

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MCQ▾

### Question

In four consecutive prime numbers that are in descending order, the product of first three is 5083 and that of the last three is 1105. The largest given prime number is

### Choices

Choice (4)Response

a.

11

b.

23

c.

17

d.

19

## Question number: 417

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MCQ▾

### Question

A man bought a second-hand typewriter for Rs. 3000 and spent Rs. 1000 on its repairs. He sold it for Rs. 6000. His profit percent is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 418

Edit
MCQ▾

### Question

In four consecutive prime numbers that are in descending order, the product of first three is 21793 and that of the last three is 6479. The largest given prime number is

### Choices

Choice (4)Response

a.

5

b.

11

c.

37

d.

23

## Question number: 419

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MCQ▾

### Question

The distance between two stations P and Q is 500 km. A train starts from P and moves towards Q at an average speed of 20 km/hr. another train starts from Q at the same time and moves towards P at an average speed of 80 km/hr. How far from P will they cross each other?

### Choices

Choice (4)Response

a.

600 km

b.

100 km

c.

525 km

d.

350 km

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