Question

(iv) A number having only two divisors is called a prime number.
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Answer 1

Step-by-step explanation:

A number having only two divisors is called a prime number.

example :

'3' is a prime number

It is divisible by (1) and (3) number itself.

'5' is a prime number

it is divisible by (1) and (5) number itself.

Let a number be 'a'

if a is having only two divisors or factors, so 'a' will be a prime number.

But, if 'a' is having more than two divisors or factors then 'a' is not a prime number.