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Question

The mean of 5 observatons x+3,x+5,x+7,x+9,x+11 is 14. Find the value of x.


A

5

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B

7

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C

8

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D

6

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Solution

The correct option is B

7


Mean = x+3+x+5+x+7+x+9+x+115 = 14

5x+35=70

5x=35

x=7


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