# IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 72 - 78 of 1022

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## Question number: 72

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MCQ▾

### Question

Which of the following statement is true?

### Choices

Choice (4) Response

a.

For all non-zero integers a and b, is always greater than either a or b

b.

The product of two negative integers is positive

c.

The product of a negative and a positive integer may be zero

d.

All of the above

## Question number: 73

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MCQ▾

Simplify

### Choices

Choice (4) Response

a.

89

b.

90

c.

87

d.

88

## Question number: 74

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MCQ▾

### Question

The difference of the sum of even numbers and sum of odd numbers between 10 and 20 is________.

### Choices

Choice (4) Response

a.

13

b.

14

c.

15

d.

16

## Question number: 75

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MCQ▾

### Question

A rational number

### Choices

Choice (4) Response

a.

It is not possible to represent on the number line

b.

Lies to the left side of 0 on the number line

c.

Lies to the right side of 0 on the number line

d.

Cannot be determined on which side the number lies

## Question number: 76

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MCQ▾

### Question

The product of two rational numbers is. If one of the numbers is , then the other number is________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 77

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MCQ▾

### Question

What will be the sign of the product if we together multiply 101 negative integers and 11 positive integers?

### Choices

Choice (4) Response

a.

Positive

b.

Negative

c.

Data is insufficient

d.

Can’t say

## Question number: 78

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MCQ▾

### Question

The difference of the sum of even numbers and sum of odd numbers between 20 and 30 is________.

### Choices

Choice (4) Response

a.

24

b.

13

c.

26

d.

25