Sainik School Entrance Exam 2020 Solved Paper

Question : 47 of 150

Marks: +1, -0

The mean of six numbers is 15 . If 2 is taken away from every number, the new mean would be

Solution:

(a) The mean of six number

=15

Sum of six number

=6 ×15=90

As given in question, 2 is taken away from every number
∴ New number

=90-2 ×6=90-12=78

Hence, new mean

={78}/{6}=13

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