# 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