Question

If $m=3,n=7$ , evaluate
(ii) $5m{n}^2$.

Answer 1

Given : $5m{n}^2$

Substituting $m=3,n=7$ , in the given expression

$5m{n}^2=5\times 3\times (7{)}^2$

$=15\times 49$

$=735$

Hence, the value of $5m{n}^2$ for $m=3,n=7$ is $735$.