# IMO Level 1- Mathematics Olympiad (SOF) Class 6: Questions 232 - 239 of 1059

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## Question 232

### Question

MCQ▾

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 233

### Question

MCQ▾

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 234

### Question

MCQ▾

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 235

### Question

MCQ▾

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

## Question 236

### Question

MCQ▾

The number 11284 and 7655 when divided by a certain 3 digit number leave the same remainder. Find the number and the remainder

### Choices

Choice (4)Response

a.

191,15

b.

190,14

c.

180,20

d.

195,25

## Question 237

### Question

MCQ▾

The integer which is 5 less than is

### Choices

Choice (4)Response

a.

13

b.

- 15

c.

8

d.

9

## Question 238

### Question

MCQ▾

The number (9,8) are

### Choices

Choice (4)Response

a.

Prime numbers

b.

Co-prime numbers

c.

Prime and co-prime

d.

Question does not provide sufficient data or is vague

## Question 239

### Question

MCQ▾

The expression is equivalent to , uses the ________ property.

### Choices

Choice (4)Response

a.

Commutative

b.

Distributive

c.

Closure

d.

Identity