Playing With Numbers (IMO- Mathematics Olympiad Class 6): Questions 26 - 33 of 86

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Question number: 26

» 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: 27

» 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: 28

» 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: 29

» Playing With Numbers

MCQ▾

Question

Which of the following is a perfect square?

Choices

Choice (4) Response

a.

36

b.

36 & 81

c.

37

d.

81

Question number: 30

» Playing With Numbers

MCQ▾

Question

A, M, T, I represent different non-zero digits, It is given that A + M + T + I – 11

A + M + I – 10

A + M – 1

Further in the following addition only one digit is given.

Image showing the addition

Image Showing the Addition

Showing the A, M, T, I represent different non-zero digits

The sum will be?

Choices

Choice (4) Response

a.

Sum is 35725734

b.

Sum is 35725792

c.

Sum is 34425792

d.

Sum is 35722292

Question number: 31

» Playing With Numbers

MCQ▾

Question

2592 is divisible by

Choices

Choice (4) Response

a.

6

b.

8

c.

3

d.

All a. , b. and c. are correct

Question number: 32

» Playing With Numbers

MCQ▾

Question

The two numbers which have only 1 as their common factor are called

Choices

Choice (4) Response

a.

Twin primes

b.

Co-primes

c.

Composite

d.

Even numbers

Question number: 33

» Playing With Numbers

MCQ▾

Question

The co-prime numbers from the following pairs, is

Choices

Choice (4) Response

a.

27 and 81

b.

18 and 26

c.

45 and 16

d.

24 and 32

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