# Mathematics-Playing With Numbers (NSTSE Class 6): Questions 23 - 31 of 83

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## Question number: 23

» Mathematics » Playing With Numbers

MCQ▾

### Question

Number of prime numbers between 70 to 110 is

### Choices

Choice (4) Response

a.

12

b.

9

c.

7

d.

10

## Question number: 24

» Mathematics » Playing With Numbers

MCQ▾

### Question

Numbers of prime numbers from 1 to 100 are

### Choices

Choice (4) Response

a.

25

b.

20

c.

15

d.

18

## Question number: 25

» Mathematics » Playing With Numbers

MCQ▾

### Question

An odd number has ________

### Choices

Choice (4) Response

a.

1, 3, 5, 7 or 9 at one’s place

b.

2 factor only

c.

2 multiplies only

d.

0, 2, 4, 6 or 8 at one’s place

## Question number: 26

» Mathematics » Playing With Numbers

MCQ▾

### Question

The number 36 has________

### Choices

Choice (4) Response

a.

6 factors

b.

4 factors

c.

3 factors

d.

9 factors

## Question number: 27

» Mathematics » Playing With Numbers

MCQ▾

### Question

Example of an odd number from the following is

### Choices

Choice (4) Response

a.

54658

b.

875674

c.

32444

d.

35467

## Question number: 28

» Mathematics » Playing With Numbers

MCQ▾

### Question

By gold Bach’s conjecture, every odd number greater than 5 can be expressed as a sum of

### Choices

Choice (4) Response

a.

Two odd prime number

b.

Two composite number

c.

Three primes

d.

Two co-prime number

## Question number: 29

» Mathematics » Playing With Numbers

MCQ▾

### Question

Which of the following are prime numbers?

### Choices

Choice (4) Response

a.

124

b.

198

c.

197

d.

All of the above

## Question number: 30

» Mathematics » Playing With Numbers

MCQ▾

### Question

Every number is a factor of zero (0) =

### Choices

Choice (4) Response

a.

1

b.

0

c.

2

d.

None of the above

## Question number: 31

» Mathematics » Playing With Numbers

MCQ▾

### Question

Brijesh wrote two digits of a 3-digit number on the blackboard as shown below. Find the missing digit if it has 11 and 13 as factors?

 2 ? 1

### Choices

Choice (4) Response

a.

3

b.

4

c.

2

d.

8

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