Question

Find the mean of the first five multiples of $6$

Answer 1

Finding the mean of the first five multiples of $6$

The first five multiples of $6$ are $6,12,18,24,30$

Sum of multiples $=6+12+18+24+30$

$=90$

Therefore,

Required mean $=\frac{\mathbf{S}\mathbf{u}\mathbf{m}\mathbf{}\mathbf{o}\mathbf{f}\mathbf{}\mathbf{m}\mathbf{u}\mathbf{l}\mathbf{t}\mathbf{i}\mathbf{p}\mathbf{l}\mathbf{e}\mathbf{s}}{\mathbf{T}\mathbf{o}\mathbf{t}\mathbf{a}\mathbf{l}\mathbf{}\mathbf{n}\mathbf{u}\mathbf{m}\mathbf{b}\mathbf{e}\mathbf{r}\mathbf{}\mathbf{o}\mathbf{f}\mathbf{}\mathbf{m}\mathbf{u}\mathbf{l}\mathbf{t}\mathbf{i}\mathbf{p}\mathbf{l}\mathbf{e}\mathbf{s}}$

$$\begin{gathered} =\frac{90}{5} \\ =18 \end{gathered}$$

Hence, the required mean is $18$