TBQ - Find the following — task. Maths CBSE Live product, Class 10 (2026-27).

Calculate the sum of first \(14\) terms of the list of numbers whose \(n^{th}\) term is given by \(a_n= 3 + 4n\)

Sum of the first \(14\) terms \(=\)

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3. TBQ - Find the following