helpQuestion $1$

Define $$ on all natural numbers by $xy$ if and only if $x$ and $y$ have the same quotient when

divided by $5.$ Which of the following are in the equivalence class $[8]?($mark all that apply$)$

$8$

$5$

$12$

$2$

$11$

$7$

$14$

$6$

$13$

$3$

$9$

$4$

$10$

$0$

$1$