IMO- Mathematics Olympiad Class 6: Questions 125 - 131 of 1049

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Question number: 125

» Number Systems

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Equation

b.

1

c.

0

d.

96

Question number: 126

» 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: 127

» Number Systems

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 128

» Playing With Numbers

MCQ▾

Question

A number is always divisible by 90 if

Choices

Choice (4) Response

a.

It is divisible by both 9 and 10

b.

It is divisible by both 5 and 18

c.

It is divisible by both 2 and 45

d.

All a. , b. and c. are correct

Question number: 129

» 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

Question number: 130

» Playing With Numbers

MCQ▾

Question

The prime number that is placed at fifth after prime number 7 is

Choices

Choice (4) Response

a.

23

b.

29

c.

19

d.

27

Question number: 131

» Playing With Numbers

MCQ▾

Question

Observe the following patterns. Then find the sum of Equation .

Equation

Equation

Equation

Equation

Equation

………………………………………………………. ……………………………………………………….

Choices

Choice (4) Response

a.

64

b.

100

c.

121

d.

81

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