# Number Systems (IMO- Mathematics Olympiad Class 6): Questions 30 - 37 of 84

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## Question number: 30

» Number Systems

MCQ▾

### Choices

Choice (4) Response

a.

1

b.

0

c.

2

d.

3

## Question number: 31

» Number Systems

MCQ▾

### Question

Difference between place value of 7 face value of 5 in 81, 23, 457 is________

### Choices

Choice (4) Response

a.

2

b.

22

c.

12

d.

20

## Question number: 32

» Number Systems

MCQ▾

### Question

Multiplicative identity is________

### Choices

Choice (4) Response

a.

2

b.

0

c.

3

d.

1

## Question number: 33

» Number Systems

MCQ▾

### Question

Which of the following statement is true?

Statement I: Every whole number is a rational number

Statement II: Every integer is a rational number

### Choices

Choice (4) Response

a.

I true,

b.

I and II false

c.

I and II true

d.

II true

## Question number: 34

» Number Systems

MCQ▾

### Question

The number with which 96 is multiplied so that product remains the same is ________

### Choices

Choice (4) Response

a.

b.

1

c.

0

d.

96

## Question number: 35

» Number Systems

MCQ▾

### Question

Multiplicative identity for a rational number is________

### Choices

Choice (4) Response

a.

2

b.

0

c.

1

d.

None of the above

## Question number: 36

» Number Systems

MCQ▾

### Question

If are two whole numbers, then commutative law is applicable to subtraction if and only if

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 37

» Number Systems

MCQ▾

### Question

Which of the following statement is true if N, W and I are sets of Natural, Whole and Integer numbers respectively?

### Choices

Choice (4) Response

a.

I ⊂ W ⊂ N

b.

N ⊂ W ⊂ I

c.

I ⊂ N ⊂ W

d.

W ⊂ N ⊂ I

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