Question

Is 77 a prime or composite number?

Answer 1

`77` is a composite number.

Explanation:

A prime number is one which does not have any factor other than `1` and itself.

A composite number is one which also has factors other than `1` and itself.

As `77=7xx11`, it has two factors `7` and `11` (other than `1` and `77`) and as such it is a composite number.