Math Chapter Wise Exponential And Logarithmic Series English MCQ PGT 2009 Q.The value of 3.6 + 6.9 + 9.12 +….3n. (3n + 3) is A3 (1)(2) + + n n n B3 (1) + n n C3 (2) + n n DNone of these Show answer Correct answer: 3 (1)(2) + + n n n