IMO- Mathematics Olympiad (SOF) Class 6: Questions 161 - 167 of 1049

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Question number: 161

» Playing With Numbers

MCQ▾

Question

The HCF two numbers is 18. If one of the numbers is 90 and another is 36, then their LCM is

Choices

Choice (4) Response

a.

180

b.

165

c.

170

d.

155

Question number: 162

» Playing With Numbers

MCQ▾

Question

The LCM of two numbers is 138. If one of the numbers is 46 and another is 69, then the HCF is

Choices

Choice (4) Response

a.

23

b.

13

c.

28

d.

29

Question number: 163

» Number Systems

MCQ▾

Question

There are 378 red cards in box. A boy takes out 9 red cards from it and replaces them by 14 blue cards. He continues to do so, till all red cards are replaced by blue cards. Find the number of blue cards put in the box?

Choices

Choice (4) Response

a.

438

b.

658

c.

588

d.

348

Question number: 164

» Playing With Numbers

MCQ▾

Question

The number 3, 116, 365 is divisible by

Choices

Choice (4) Response

a.

5

b.

5 & 7

c.

7

d.

Question does not provide sufficient data or is vague

Question number: 165

» Number Systems

MCQ▾

Question

Cube of any negative integer is

Choices

Choice (4) Response

a.

0

b.

Negative

c.

Depend on the nature of integer

d.

Positive

Question number: 166

» Playing With Numbers

MCQ▾

Question

Find the smallest number which will divide the greatest 3-digit number and the greatest 5-digit number exactly.

Choices

Choice (4) Response

a.

9

b.

8

c.

7

d.

3

Question number: 167

» Number Systems

MCQ▾

Question

If positive sign precedes a bracket the sign of the terms inside the bracket will ________ when the bracket is removed.

Choices

Choice (4) Response

a.

Change

b.

Be 0

c.

Depends on the bracket

d.

Not change

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