$\text{ Digits are }1,2,2,2,3,3,5$
$\text{ If unit digit }5,\text{ then total numbers }=\frac{6!}{3!2!}=60$
$\text{ If unit digit }3\text{, then total numbers }=\frac{6!}{3!}=120$
$\text{ If unit digit }1,\text{ then total numbers }=\frac{6!}{3!2!}=60$
Total numbers = 240