# IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 30 - 34 of 1022

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## Question 30

### Question

MCQ▾

Which of the following statements is true?

### Choices

Choice (4)Response

a.

is a rational number

b.

Irrational number is not written in ration form

c.

2 is a prime number

d.

All a., b. and c. are correct

## Question 31

### Question

MCQ▾

Which of the following number sentence below best describes the problem shown on the number line?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 32

### Question

MCQ▾

In a magic square each row, column and diagonal have the same sum, then the values of A and B are respectively________.

 1 -10 0 A -3 -2 -6 4 B

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 33

### Question

MCQ▾

An insect crawls up 7 cm every second on an 80 cm vertical rod and then falls down 3 cm over the next second. How many seconds will it take to climb the rod?

### Choices

Choice (4)Response

a.

30 seconds

b.

20 seconds

c.

60 seconds

d.

39 seconds

## Question 34

### Question

MCQ▾

Which of the following statements is true?

### Choices

Choice (4)Response

a.

The product of two rational numbers is a rational number

b.

Zero has no reciprocal

c.

1 and -1 are reciprocal of themselves

d.

All a., b. and c. are correct

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