Question

Find the mean of first three multiple of 6

Answer 1

First three multiples of 6 are 6,12,18
Mean = sum of obs / no. of obs = 6+12+18/3 = 36/3 = 12

Answer 2

Answer:first three multiple of 6 are : 6,12,18.

in this case middle term 12 is mean.

because difference b/w terms are same.

otherwise we can use mean formula i. e, =sum of observation / no. of observation, so

6+12+18/3=36/3=12 ans.