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If the arithmetic mean of 7,\ 8,\ x ,\ 1...

If the arithmetic mean of `7,\ 8,\ x ,\ 11 ,\ 14` is `x` , then `x=` (a) 9 (b) 9.5 (c) 10 (d) 10.5

A

9

B

9.5

C

10

D

10.5

Text Solution

Verified by Experts

The correct Answer is:
C
We have,
`(7+8+x+11+14)/(5) = x rArr 40 +x=5x rArr x = 10`
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OBJECTIVE RD SHARMA ENGLISH-MEASURES OF CENTRAL TENDENCY-Section I - Solved Mcqs
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