Question

Use the divisibility rule to check the divisibility of $23457$ by $4$.

Answer 1

Checking divisibility :

The divisibility rule of $4$ states that if the last two digits of the number is divisible by $4$ or $00$, the number will be divisible by $4$.
Given number: $23457$
Last two digits: $57$
$\frac{57}{4}=4\times 14+1$
Remainder $=1$
Therefore, the number $23457$ is not divisible by $4$.