Question

Write all the common multiples of $7$ and $5$ from $1$ to $100$.

Answer 1

Multiples of $7$ from $1$ to $100$ are: $7,14,21,28,35,42,49,56,63,70,77,84,91,$ and$98$.

Similarly, the multiples of $5$ from $1$ to $100$ are: $5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,$and $100$

Therefore, the common multiples of $7$ and $5$ from $1$ to $100$ are $35$ and$70$.