Math Chapter Wise Sequences And Series (A.p., G.p., H.p.) English MCQ Haryana PGT 2019 Q.If sum of series 1+ 4x + 7x2 + 10x3 +...∞ ∞ ∞, where x <1, is 35, 16 then x equals: A2/5 B1/5 C3/5 DNone of these Show answer Correct answer: 1/5