# Number System (IMO- Mathematics Olympiad (SOF) Class 7): Questions 23 - 29 of 81

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## Question number: 23

» Number System

MCQ▾

### Question

The average of the two middle rational numbers if are arranged in descending order is________.

### Choices

Choice (4) Response

a.

6

b.

4

c.

1

d.

5

## Question number: 24

» Number System

MCQ▾

### Question

If p: When a positive integer and a negative integer are added we always get a negative integer.

q: When two negative integers are added, we get a positive integer, then

### Choices

Choice (4) Response

a.

P is true and q is false

b.

P and q are true

c.

p is false and q is true

d.

P and q are false

## Question number: 25

» Number System

MCQ▾

### Question

Which integer is the additive inverse of itself?

### Choices

Choice (4) Response

a.

0

b.

2

c.

3

d.

1

## Question number: 26

» Number System

MCQ▾

### Question

The value of, where is absolute value of an integer is________.

### Choices

Choice (4) Response

a.

1

b.

2

c.

0

d.

3

## Question number: 27

» Number System

MCQ▾

### Question

Which pair of numbers does not have a product equal to 45?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 28

» Number System

MCQ▾

### Question

A tank contains 500 liters of water. Due to a small hole in the tank, the quantity of water is decreasing at the rate of 9 liters every hour. What will be the quantity of the water in the tank after 10 hours?

### Choices

Choice (4) Response

a.

410 liters

b.

90 liters

c.

491 liters

d.

400 liters

## Question number: 29

» Number System

MCQ▾

### Question

For any two rational numbers x and y which of the following are correct, if x is positive and y is negative?

1. X < Y 2. X = Y 3. X > Y

### Choices

Choice (4) Response

a.

Only 3 is correct

b.

Only 1 and 2 are correct

c.

Only 2 and 3 are correct

d.

All of the above

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