Question

Test whether the following numbers are divisible by $2,3,5$ and $10$
$56982$

Answer 1

56982

(1) since last digit is even

$\therefore$ it is divisible by $2$

(2) $5+6+9+8+2=30\Rightarrow 30$ is divisible by $3.$

$\therefore 56982$ is also divisible by $3.$

(3) since last digit is not $5$ or $0.$

$\therefore$ it is not divisible by $5.$

(4) it is not divisible by $10$ because last digit is not $0$.