Question

Find the mean of first five multiples of 9

Answer 1

$\Large{\underline{\underline{\bf{Solution:-}}}}$

${\bold{\underline{\underline{First\: Five\: multiples\: of \: 9:-}}}}$

9 , 18 , 27 , 36 , 45

${\bold{\underline{\underline{Let \:us\: find \:mean \:now:-}}}}$

$⟹mean = \frac{sum \: of \: the \: numbers}{total \: number \: of \: observation} \\ \\⟹ mean = \frac{(9 + 18 + 27 + 36 + 45)}{5} \\ \\ ⟹mean = \frac{135}{5 } \\ \\ ⟹mean = 27$

${\Large{\underline{\mathfrak{\boxed{mean=27}}}}}$

$\Large{\underline{\underline{\bf{Thanks}}}}$

Answer 2

Solution:-

First five multiples of 9 are as follows:-

9 , 18 , 27 , 36 , 45

${\bold{\underline{\underline{Let \:us\: find \:mean \:now:-}}}}$

$mean \: = \frac{sum \: of \: all \: observations}{total \: number \: of \: observation} \\ \\ mean = \frac{9 + 18 + 27 + 36 + 45}{5} \\ \\ mean = \frac{135}{5 } \\ \\ mean = 27$

Hope it helps you!