Question

Check the divisibility of the following numbers by $8$:

$871241$

Answer 1

Compute the required value:

A number is divisible by $8$, if the number formed by its right-most three digits (ones, tens, hundreds digit) is divisible by $8$.

$871241$ the right-most three digits are $241$

Check that is $241$ divisible by $8$ or not.

$830241-24----01-0---1---$

No, $241$ is not divisible by $8$.

Hence, $871241$ is not divisible by $8$.