Question

what is the formula of geometric progression​

Answer 1

Answer:

A geometric progression is a sequence in which each term is derived by multiplying or dividing the preceding term by a fixed number called the common ratio. ... The general form of a GP is a, ar, ar2, ar3 and so on. The nth term of a GP series is Tn = arn-1, where a = first term and r = common ratio = Tn/Tn-1) .

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Answer 2

sum of n terms of GP = a(r-1)^n/(r-1)

GM = root (ab)