Question

18. Find the mean of the first six multiples of 3.​

Answer 1

Question :

To find mean of six multiples of 3.

Answer :

• first 6 multiples of 3

✰To find multiples :

$\sf =>\: 3 \times 1, \: 3 \times 2,3 \times 3,3 \times 4,3 \times 5,3 \times 6$

$= > \sf \: 3,6,9,12,15,18$

✰To find mean :

$\bf \: mean \: = \frac{total \: observation}{no. \: of \: observations}$

$: \implies\sf \: total \: obsevations = 63$

$: \implies\sf \: no. \: of \: observations \: = 6$

$: \implies\sf \: \frac{ 3 + 6 + 9 + 12 + 15 + 18}{6} = \frac{63}{6} = 10.5$

${\boxed{\bf{\underline{\underline{mean \: = 10.5}}}}}$