Question

Write down separately the prime and composite number less than 25

Answer 1

Answer:

prime numbers - 2, 3 ,5,7, 11, 1 3, 17,1 9, 23

composite number - 4, 6, 8, 12, 15, 16 ,18, 20, 21, 24,25

Answer 2

The prime numbers less than 25 are 2, 3, 5, 7, 11, 13, 17, 19, and 23.

The composite numbers less than 25 are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, and 24.

Prime numbers:

• They are natural numbers and hence positive integers.
• They are only divisible by 1 and the number itself.
• Or we can say they have only two factors, 1 and the number itself.
• Therefore they are odd numbers except 2(only even prime number).
• 1 is not a prime number.

The prime numbers less than 25 are:

2, 3, 5, 7, 11, 13, 17, 19, 23.

Composite numbers:

• They are also natural numbers and hence positive integers.
• These are numbers having more than two factors.
• Some composite numbers can be written as the product of two prime numbers too.
• They can be either odd or even.
• 1 is not a composite number.

The composite numbers less than 25 are:

4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24.

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