Q250 / 270 · NDA 2012 (Phase 2) · Mathematics

The mean of 10 observations is 5 . If 2 is added to each observation and then multiplied by 3 , then what will be the new mean?

A
5
B
7
C
15
Correct answer
D
21

Solution

The correct answer is option D.

Hence, the correct answer is option: 'D'.

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