Question

Using the divisibility test, determine $572$ is divisible by $4$, by $8$ or not?

Answer 1

Step $1:$ Explaining the divisibility test:

Divisibility test of $4$: A number is divisible by $4$, when the last two digits of the number is divisible by $4$

Divisibility test of $8$: A number is divisible by $8$, when the last three digits of the number is divisible by $8$

Step $2$: Finding whether $572$ is divisible by $4$, by $8$ or not

The given number is $572$

Last two digits in $572$ is $72$

Clearly, $72$$÷4=$$18$

Thus, $72$ is divisible by $4$, therefore $572$ is divisible by $4$

Last three digits in $572$ is $572$

Clearly, $572$$÷8=$$71.5$

Therefore $572$ is not divisible by $8$

Hence, $572$ is divisible by $4$ but not by $8$