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Class 9 Mathematics Medium Mcq English Medium

A set of 7 values has mean 20. If a new value 25 is added, what is the new mean?

Question
A set of 7 values has mean 20. If a new value 25 is added, what is the new mean?
25
21.00
20.62
20
Answer
20.62
Detailed Explanation
Find the old total as n times the old mean, add the new value, then divide by n+1. — Examisthan.com
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