If the mean of x,x + 2,x + 4,x + 6,x + 8 is 20 then x is
Here, total number of observations = 5
And given that, mean = 20
Mean is given by
⇒ 
⇒ 5x + 20 = 5 × 20
⇒ 5x + 20 = 100
⇒ 5x = 100 – 20
⇒ 5x = 80
⇒ 
⇒ x = 16
Thus, option (B) is correct.
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