Which term of the G.P. (i) 2, , 4, .... is 128? (ii) ?

Question

KnowledgeBoat · Accepted Answer

(i) Given a = 2, r = . Let nth term be 128. By formula, a_n = ar^{n - 1}. Hence, 128 is 13th term of the G.P. (ii) Given a = 1, r = . Let nth term be . By formula, a_n = ar^{n - 1}. Hence, is 6th term of the G.P.

Mathematics

Which term of the G.P. (i) 2, , 4, .... is 128? (ii) ?

AP GP

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