Q5 of 71 Page 208

If the mean of 5, 7, 9 and x is 9, then the value of x is—

We know that,


Where, = Mean, xi = observations and n = no. of observations.



⇒ x + 21 = 36


⇒ x = 15


(A)doesn’t match the solution.


(C) doesn’t match the solution.


(D) doesn’t match the solution.

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