Aptitude | Progressions | Question 1

Find the Arithmetic Mean of series: 2, 6, 10, 14, 18, 22, 26, 30.
(A) 16
(B) 8
(C) 64
(D) 36


Answer: (A)

Explanation: AM = (a1+a2+a3+……+an)/n
=(n(a1+an)/2)/n
=(a1+an)/2 = (2 + 30)/2 = 16


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