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

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## Question number: 228

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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

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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

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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

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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

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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

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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

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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

Edit
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

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