Question

If the mean of $6,4,x,13,10$ is $8$. Find the value of x.

Answer 1

As we know that mean =$\frac{\text{sum ~of~ the~ given ~no}}{\text{total ~no. ~terms ~given}}$
Given terms are $6,4,x,13,10$
So no. of total terms =5
Given mean =8 =$\frac{6+4+x+13+10}{5}$
$\Rightarrow 40=33+x$
$\therefore x=7$