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

If a₁ + a₂ + a₃ + …. + a_n = 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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