Question

Fill in the blanks in the following:
(i) A number having only two factors is called a ____
(ii) A number having more than two factors is called a____
(iii) $1$ is neither ____ nor___
(iv) The smallest prime number is____
(v) The smallest composite number is ____

Answer 1

(i) A number having only two factors is called a prime number.

Ex:

$7$ is a prime number.

factors of $7$ are $1,7$.
(ii) A number having more than two factors is called a composite number.

Ex:

$4$ is a composite number.

Factors of $4=1,2$ and $4$.
(iii) $1$ is neither composite nor prime.

Since, the factor of $1$ is itself only.
(iv) The smallest prime number is $2$.

Since, $2$ is even and which has the factors only $1$ and itself.
(v) The smallest composite number is 4.

Since, $1$ is neither composite nor prime.

$2,3$ are the prime numbers.

So, the next number is $4$ and which has the factors $1,2$ and $4$.