PYQ - Find the sum of all terms of A.P. — task. Maths TNSB Mentoring, Class 10 Crash course.

An A.P. consists of $35$ terms. If its $16^{th}$ term is $m$, then the sum of all the terms of this A.P. is:

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1. PYQ - Find the sum of all terms of A.P.