Write $30$ and $36$ as the products of prime factors.

Write the missing numbers in the factor tree given below.

Check, if the following number is written as the product of prime numbers or not.

$62=2\times 31$

Check, if the following number is written as the product of prime numbers or not.

$42=2\times 21$

Check, if the following number is written as the product of prime numbers or not.

$88=2\times 2\times 2\times 11$