The first term of a G.P. is 27 and its 8th term is 1/81. Find the sum of first seven terms of the G.P.

Question

KnowledgeBoat · Accepted Answer

Given, a = 27 We know that, The sum of the first n terms of a G.P. is given by: [For r 1] Substituting values we get : Hence, S7 = .

Mathematics