Prime and Composite Numbers

Q. What is the sum of the first 5 prime numbers?

1. 25
2. 28
3. 39
4. 17

Q. Which of the following is not a prime number?

1. 13
2. 53
3. 9
4. 41

Q. The smallest composite number is

1. 1

2. 4

3. 0

4. 3

Q.

The sum of the first two prime numbers is ___ .

Q.

The largest 2-digit prime number is ___

Q.

Find the prime numbers from the given options.
This question can have more than one correct answer.

1. 13

2. 9

3. 1

4. 11

Q.

Which is a pair of twin prime numbers?

1. 10, 11

2. 24, 28

3. 11, 13

4. 22, 24

Q. Which of the following is a factor pair of 26?

1. 2 and 13
2. 1 and 13
3. 3 and 12
4. 4 and 6

Q. 1 is a factor of ___ natural number.

1. every
2. odd
3. even
4. composite

Q. Any two numbers having only 1 as their common factor are called as ______.

1. twin primes
2. special numbers
3. composite numbers
4. coprime numbers