IMO Level 1- Mathematics Olympiad (SOF) Class 6: Questions 228 - 235 of 1059

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Question number: 228

» Number Systems

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MCQ▾

Question

Difference between the face value of 3 & 5 in 134,890 and 215,648 is

Choices

Choice (4) Response

a.

2

b.

8

c.

25,000

d.

29,242

Question number: 229

» Playing with Numbers

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MCQ▾

Question

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

Choices

Choice (4) Response

a.

47 and 63

b.

29 and 57

c.

83 and 97

d.

31 and 33

Question number: 230

» Playing with Numbers

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MCQ▾

Question

The least number which when decreased by 7 is exactly divisible by 6,7, 21 and 42 is

Choices

Choice (4) Response

a.

35

b.

53

c.

49

d.

36

Question number: 231

» Playing with Numbers

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MCQ▾

Question

HCF of the two numbers =

Choices

Choice (4) Response

a.

Product of numbers × their LCM

b.

Product of numbers + their LCM

c.

Product of numbers - their LCM

d.

Product of numbers ÷ their LCM

Question number: 232

» Playing with Numbers

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MCQ▾

Question

Which of the following is the pair that is not twin primes?

Choices

Choice (4) Response

a.

(5,7)

b.

(11,13)

c.

(17,19)

d.

(23,29)

Question number: 233

» Number Systems

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MCQ▾

Question

Product of two integer is If one of the integers is , then the other is

Choices

Choice (4) Response

a.

28

b.

8

c.

1

d.

0

Question number: 234

» Playing with Numbers

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MCQ▾

Question

The least number of square tiles that will be needed to pave a plot 225 m by 30 m is

Choices

Choice (4) Response

a.

25 tile

b.

30 tiles

c.

15 tiles

d.

45 tiles

Question number: 235

» Playing with Numbers

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MCQ▾

Question

The number (67,54) are

Choices

Choice (4) Response

a.

Co-prime numbers

b.

Prime numbers

c.

prime and co-prime

d.

All of the above