What is the greatest $3$digit even number?

The greatest $3$ digit even number.

An even number is a number divisible by$2$.

$3$ consist of $3$ digits. Such numbers vary from $100$ to$999$. The greatest even $3$ digit number is$999$.

But $999$ is the greatest odd number. so the greatest even number is $998$

Hence, $998$ is the greatest even $3$ digit even number.