# IMO- Mathematics Olympiad Class 6: Questions 226 - 230 of 1049

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## Question number: 226

MCQ▾

### Question

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 number: 227

MCQ▾

### Question

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 number: 228

MCQ▾

### Question

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

### Choices

Choice (4) Response

a.

25, 000

b.

8

c.

2

d.

29, 242

## Question number: 229

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

## Question number: 230

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.

53

b.

49

c.

35

d.

36

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