Calculate the arithmetic mean of the given series: 2, 6, 10, 14, 18, 22, 26, 30.
(A)
8
(B)
16
(C)
32
(D)
None of the above
Answer: (B)
Explanation:
AM = (a1+a2+a3+……+an)/n
=(n(a1+an)/2)/n
=(a1+an)/2 = (2 + 30)/2 = 16
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