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Find the mean of first five multiples of 3.
Given:
First five multiples of 3.
To do:
We have to find the mean of first five multiples of 3.
Solution:
We know that,
Mean $=\frac{Sum\ of\ the\ observations}{Number\ of\ observations}$
First five multiples of 3 are 3, 6, 9, 12 and 15.
Therefore,
Mean $=\frac{3+6+9+12+15}{5}$
$=\frac{45}{5}$
$=9$
Hence, the mean of the first five multiples of 3 is $9$.
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