Question

Test the divisibility of $980$ by $2,3$ and $6$.

Answer 1

Divisibility rule of $2$ - A number is divisible by $2$ if its ones place digits are $0,2,4,6$ or $8$.

$980$ is divisible by $2$ as its ones place digit is $0$.
Divisibility rule of $3$ - A number is divisible by $3$ if the sum of its digits is divisible by $3$.

$980$ is not divisible by $3$ as the sum of its digits $9+8+0=17$ which is not divisible by $3$.

Divisibility rule of $6$ - A number is divisible by $6$ if it is divisible by $2$ and $3$ both.

$980$ is divisible by $2$ as its ones place is $0$. But it is not divisible by $3$ as $9+8+0=17$ is not divisible by $3$.
Thus, $980$ is not divisible by $6$.