# Number Systems (IMO- Mathematics Olympiad Class 6): Questions 23 - 29 of 84

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## Question number: 23

» Number Systems

MCQ▾

### Question

What is the inverse property of multiplication and addition respectively ________

### Choices

Choice (4) Response

a.

0, 1

b.

1, 0

c.

All of the above

d.

Question does not provide sufficient data or is vague

## Question number: 24

» Number Systems

MCQ▾

### Question

Which of the following statement is true?

Statement I: Every integer is a whole number

Statement II: Every rational number is a whole number

### Choices

Choice (4) Response

a.

I and II true

b.

II true

c.

I true,

d.

I and II false

## Question number: 25

» Number Systems

MCQ▾

### Question

The number with which 143 is added so that the sum remains the same is ________

### Choices

Choice (4) Response

a.

0

b.

43

c.

143

d.

1

## Question number: 26

» Number Systems

MCQ▾

### Question

Difference between the face value of 8 and 5 in 26, 248 and 76, 542 is

### Choices

Choice (4) Response

a.

3

b.

442

c.

805

d.

Question does not provide sufficient data or is vague

## Question number: 27

» Number Systems

MCQ▾

### Question

Sum of face value of 9 and 4 in 2, 59, 570 and 7, 34, 256 is

### Choices

Choice (4) Response

a.

13000

b.

13

c.

5

d.

5000

## Question number: 28

» Number Systems

MCQ▾

### Question

If are two whole numbers, then commutative law is applicable to addition if

### Choices

Choice (4) Response

a.

b.

c.

d.

All a. , b. and c. are correct

## Question number: 29

» Number Systems

MCQ▾

### Question

Which of the following statement is true?

### Choices

Choice (4) Response

a.

Every natural number is a whole number

b.

1 is the least whole number

c.

Every whole number is a natural number

d.

99 is the largest whole number

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