IMO Level 1- Mathematics Olympiad (SOF) Class 6: Questions 144 - 152 of 1059

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Question number: 144

» Number Systems

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MCQ▾

Question

There are 378 Mangoes in a basket. A girl takes out 7 Mango from it and replaces them by 15 orange. She continues to do so, till all Mangoes are replaced by Orange. Find the number of orange put in the basket?

Choices

Choice (4) Response

a.

480

b.

850

c.

460

d.

810

Question number: 145

» 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: 146

» 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: 147

» Playing with Numbers

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MCQ▾

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: 148

» 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: 149

» Playing with Numbers

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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: 150

» Playing with Numbers

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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: 151

» 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: 152

» 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)