If a1&nbsp;+ a2&nbsp;+ a3&nbsp;+ . + an&nbsp;= 3(2n+1&nbsp;- 2), then a11 equals&nbsp;

If a₁ + a₂ + a₃ + . + a_n = 3(2ⁿ⁺¹ - 2), then a₁₁ equals

Started 8 months ago by Shashank in

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