IMO Level 1- Mathematics Olympiad (SOF) Class 6: Questions 226 - 231 of 1059

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Question 226

Question

MCQ▾

If a, b and c are whole numbers such that a > b and c 0 and c > 0, then

Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

Question 227

Question

MCQ▾

A unit fraction is one of the from where ‘a’ is a natural number (. Any proper fraction can be written as the sum of two or more unit fractions.

{Ex. }

In the case of , the factors of 2 are 1 and 2 only

Express as the sum of two different unit fraction in different ways.

Choices

Choice (4)Response

a.

b.

c.

d.

Question 228

Question

MCQ▾

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 229

Question

MCQ▾

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 230

Question

MCQ▾

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 231

Question

MCQ▾

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