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Aptitude | Progressions | Question 3

  • Last Updated : 28 Jun, 2021

Find the AM of series: 10, 7, 4, 1, -2
(A) 13/2
(B) 14/3
(C) 4
(D) 16/5


Answer: (C)

Explanation: AM = (a1+a2+a3+……+an)/n
=(n(a1+an)/2)/n
=a1+a2/2
=10-2/2 = 4


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