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Question

If the arithmetic mean of 7,5,13,x and 9 is 10, then find the value of x.

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Solution

Given arithmetic mean of 7,5,13,x and 9 is 10

we know mean=sum of observationsno of observations

Here no of observations =5

10=7+5+13+x+95

34+x=50x=5034

x=16

value of x=16

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