Question

Find the common factors of $5$, $15$ and $25$.

Answer 1

Finding the common factors of $5$,$15$ and $25$:

Factor: A Factor of a number is an exact divisor of that number.

All the factors of $5$ are $1,5$

All the factors of $15$ are $1,3,5,15$

All the factors of $25$ are $1,5,25$

Therefore, the common factors of $5$, $15$ and $25$ are $1,5$.