SSC CHSL 15 Oct 2020 Shift 3 Paper

Question : 66 of 100

Marks: +1, -0

Given that the mean of five numbers is 28. If one of them is excluded, the mean gets reduced by 5. Determine the excluded number.

Solution:

Let the excluded number be

x

.
According to the question,

{(28-5) ×4+x}/{5}=28

⇒

92+x=140

⇒

x=48

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