Math Chapter Wise Sequences And Series (A.p., G.p., H.p.) English MCQ TGT 2009 Q.13, 23, 33, 43.......(n–1)3, sum of n3 is A2 n(n 1) 2 + Bn(n 1) 2 + C2 n 1 2 + Dnone of these Show answer Correct answer: 2 n(n 1) 2 +