Question

Write a number between $100$ and $200$ which is divisible by $5$ but not by $10$.

Answer 1

We know that the Divisibility rule of $5$: If the unit digit is either $0$ or $5$, the entire number is divisible by $5$.

And, Divisibility rule of $10$ : If the unit digit is $0$ .

So in order to get number divisible by $5$ but not $10$ we need to write a number with unit digit $5$.

Hence, a number between $100$ and $200$ which is divisible by $5$ but not by $10$ is$105$.