# NRA CGL (National Recruitment Agency-Combined Graduate Level) Mathematics: Questions 402 - 408 of 425

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## Question 402

### Question

MCQ▾

In a school with 1600 students, the average age of boys is 15 years and that of the girls is 14 years and 10 months. If the average age of the school is 14 years and 3 months, then the number of the girls in the school is

### Choices

Choice (4)Response

a.

400

b.

700

c.

470

d.

300

## Question 403

### Question

MCQ▾

If is given, then the value of is (Paper-1)

### Choices

Choice (4)Response

a.

1.4021

b.

1.7023

c.

1.6843

d.

1.5331

## Question 404

### Question

MCQ▾

How many terms are there in the geometric progression

### Choices

Choice (4)Response

a.

9

b.

c.

5

d.

7

## Question 405

### Question

MCQ▾

Nisha՚s salary was increased by 20 % . In order to bring her salary back to the original value, her new salary must be decreased by (Paper - I)

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 406

### Question

MCQ▾

The difference between two positive numbers is 5. If the sum of their squares is 625, then the sum of the numbers is (Paper-1)

### Choices

Choice (4)Response

a.

68

b.

18

c.

35

d.

73

## Question 407

### Question

MCQ▾

In the following number series only one number is wrong. Find out the wrong number.

### Choices

Choice (4)Response

a.

394

b.

399

c.

503

d.

391

## Question 408

### Question

MCQ▾

A man bought a second-hand typewriter for ₹ 1400 and spent ₹ 600 on its repairs. He sold it for ₹ 2500. His profit percent is

### Choices

Choice (4)Response

a.

b.

c.

d.

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