GATE | Sudo GATE 2020 Mock III (24 January 2019) | Question 56

If a1 + a2 + a3 + …. + an = 3(2n+1– 2), for every n≥1 , then a11 equals ___________ .
(A) 6441
(B) 6414
(C) 4461
(D) 6144


Answer: (D)

Explanation: Option (D) 6144 is correct.

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