Playing with Numbers [IMO Level 1- Mathematics Olympiad (SOF) Class 6]: Questions 9 - 17 of 86

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Question number: 9

» Playing with Numbers

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MCQ▾

Question

The two numbers nearest to 2000 which are exactly divisible by each of 2,3, 4,5 and 6 is

Choices

Choice (4)Response

a.

1860,2220

b.

1969,2220

c.

1940,2220

d.

1970,2220

Question number: 10

» Playing with Numbers

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MCQ▾

Question

Which of the following is not a perfect cube?

Choices

Choice (4)Response

a.

216

b.

512

c.

342

d.

27

Question number: 11

» Playing with Numbers

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MCQ▾

Question

The numbers which are multiplies of 2 are called________.

Choices

Choice (4)Response

a.

Odd

b.

Composite

c.

Prime

d.

Even

Question number: 12

» Playing with Numbers

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Question

The smallest value of ‘x’ in the number 156 × 0 so that it is divisible by10 is:

Choices

Choice (4)Response

a.

2

b.

1

c.

0

d.

All a. , b. and c. are correct

Question number: 13

» Playing with Numbers

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MCQ▾

Question

is divisible by

Choices

Choice (4)Response

a.

7

b.

9

c.

11

d.

3

Question number: 14

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MCQ▾

Question

The least number which when increased by 6 is exactly divisible by 12,24 and 48 is

Choices

Choice (4)Response

a.

23

b.

54

c.

36

d.

42

Question number: 15

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MCQ▾

Question

The reciprocal of the smallest prime is

Choices

Choice (4)Response

a.

0

b.

2

c.

1

d.

Question number: 16

» Playing with Numbers

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MCQ▾

Question

Which of the following is a perfect square?

Choices

Choice (4)Response

a.

49

b.

68

c.

56

d.

48

Question number: 17

» Playing with Numbers

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MCQ▾

Question

Which of the following is the pair of twin primes?

Choices

Choice (4)Response

a.

(5,11)

b.

(7,11)

c.

(17,19)

d.

(19,23)

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