Write:

Multiples of $5$ between $52$ and$76$.

The number of numbers having exactly one factor are 

The sum of the factors of $25$ is

$48$ is not a multiple of :

The greatest $2$- digit even multiple of $5$ is 

What number am I?

I am a two-digit multiple of $50$

What number am I?

I am an even number less than $100$

One of my factors is $13$.

My digits are $1$ apart.

Tell whether number is prime (P) or composite (C)

$7$

Tell whether number $39$ is prime or composite.