# IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 216 - 221 of 1022

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## Question number: 216

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MCQ▾

### Question

The number of girls in a class is 3 times the number of boys. Which of the following cannot be the total number of children in the class?

### Choices

Choice (4)Response

a.

16

b.

64

c.

32

d.

18

## Question number: 217

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MCQ▾

### Question

The total cost of three prizes is Rs. 4440. If the value of second prize is of the first and the value of third prize is of the second prize, then the value of first prize is ________.

### Choices

Choice (4)Response

a.

Rs. 1200

b.

Rs. 1500

c.

Rs. 1050

d.

Rs. 1800

## Question number: 218

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MCQ▾

### Question

A number is multiplied by 6. If 24 is subtracted from the product and difference is divided by 42, the result is equal to 10. The number is ________.

### Choices

Choice (4)Response

a.

74

b.

56

c.

19

d.

52

## Question number: 219

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MCQ▾

### Question

5 is added to a number and the sum is multiplied by 5. If 25 is subtracted from the product and difference is divided by 8, the result is equal to 10. The number is ________.

### Choices

Choice (4)Response

a.

10

b.

19

c.

16

d.

14

## Question number: 220

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MCQ▾

### Question

Savan is n years older than his sister is. His sister’s age is 19. What is their total age before 2 years?

### Choices

Choice (4)Response

a.

years

b.

years

c.

years

d.

years

## Question number: 221

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MCQ▾

### Question

, then find the value of X.

### Choices

Choice (4)Response

a.

8

b.

c.

1

d.

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