# Playing With Numbers (IMO- Mathematics Olympiad (SOF) Class 6): Questions 35 - 42 of 86

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## Question number: 35

» Playing With Numbers

MCQ▾

### Question

HCF of two co-prime numbers is

### Choices

Choice (4) Response

a.

0

b.

1

c.

2

d.

None of the above

## Question number: 36

» Playing With Numbers

MCQ▾

### Question

When a number is divided by seven, it has a remainder of 2. When it is divided by six, it has remainder of 3. What is the number?

### Choices

Choice (4) Response

a.

16

b.

44

c.

38

d.

9

## Question number: 37

» Playing With Numbers

MCQ▾

### Question

The co-prime numbers from the following pairs, is

### Choices

Choice (4) Response

a.

7 and 63

b.

63 and 81

c.

35 and 21

d.

36 and 25

## Question number: 38

» Playing With Numbers

MCQ▾

### Question

The smallest value of ‘a’ in the number 321a8 so that it is divisible by 8 is:

### Choices

Choice (4) Response

a.

1

b.

2

c.

4

d.

3

## Question number: 39

» Playing With Numbers

MCQ▾

### Question

693 is divisible by

### Choices

Choice (4) Response

a.

6

b.

9

c.

3 & 9

d.

3

## Question number: 40

» Playing With Numbers

MCQ▾

### Question

Prime factorization of 13915 is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 41

» Playing With Numbers

MCQ▾

### Question

Number of prime and co-prime numbers from 80 to 100 are

### Choices

Choice (4) Response

a.

7

b.

3

c.

4

d.

5

## Question number: 42

» Playing With Numbers

MCQ▾

### Question

Observe the following patterns. Then find the sum of .

………………………………………………………. ‎……………………………………………………….

### Choices

Choice (4) Response

a.

150

b.

320

c.

180

d.

200

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