Question

24. The mean of the squares of the numbers 1,2,3,4,.
n is
(a) 1/6 (n + 1) (2n + 1)
(b) 1/6 (n + 1)
(c) 1/6(2n + 1)
(d) None of these​

Answer 1

Answer:

The answer is (a) 1/6 (n + 1) (2n + 1)

Step-by-step explanation:

Since for the Arithmetic Progressions

Sum of squares of first n natural numbers

= 1/6 (n + 1) (2n + 1)

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