Playing With Numbers (IMO- Mathematics Olympiad Class 6): Questions 58 - 64 of 86

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Question number: 58

» Playing With Numbers

MCQ▾

Question

The LCM of two numbers is 198. If one number is 396 and another is 66, then the HCF is

Choices

Choice (4) Response

a.

231

b.

132

c.

144

d.

154

Question number: 59

» Playing With Numbers

MCQ▾

Question

Number of prime and co-prime numbers from 30 to 90 are

Choices

Choice (4) Response

a.

14

b.

13

c.

15

d.

19

Question number: 60

» Playing With Numbers

MCQ▾

Question

Two tankers contain 850 liters and 680 liters of kerosene oil respectively, then the maximum capacity of a container which can measure the kerosene out of both the tankers when used an exact number of times is ________.

Choices

Choice (4) Response

a.

85 liters

b.

10 liters

c.

170 liters

d.

34 liters

Question number: 61

» Playing With Numbers

MCQ▾

Question

The two numbers smaller than 4000 which are exactly divisible by each of 2, 3, 4, 5, 6 and 8 is

Choices

Choice (4) Response

a.

4020, 3810

b.

3920, 4140

c.

3720, 2880

d.

2720, 4320

Question number: 62

» Playing With Numbers

MCQ▾

Question

The two numbers nearest to 10000 which are exactly divisible by each of 2, 3, 4, 5, 6 and 7 is

Choices

Choice (4) Response

a.

9669, 10080

b.

10340, 10080

c.

9320, 10080

d.

9660, 10080

Question number: 63

» Playing With Numbers

MCQ▾

Question

The two consecutive prime numbers with difference 2 are called ________.

Choices

Choice (4) Response

a.

Composite

b.

Co-primes

c.

Twin primes

d.

Even

Question number: 64

» Playing With Numbers

MCQ▾

Question

The co-prime numbers and also prime numbers from the following pairs, is

Choices

Choice (4) Response

a.

47 and 63

b.

31 and 33

c.

29 and 57

d.

83 and 97

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