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The average of the first five multiples of 9 is

September 5, 2022 by Prabhat

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The average of the first five multiples of 9 is:

A. 20
B. 27
C. 28
D. 30

Answer: Option B

Here is complete explanation of The average of the first five multiples of 9 is .

Solution(By ExamCraze Team)

$$eqalign{ & {text{Required}},{text{average}} cr & = {frac{{{text{total}},{text{sum}},{text{of}},{text{multiple}},{text{of}},9}}{5}} cr & = {frac{{9 + 18 + 27 + 36 + 45}}{5}} cr & = 27 cr} $$
Note that, average of 9 and 45 is also 27.
And average of 18 and 36 is also 27.