) If the 5th term of G.P. is 81 and the 2nd term is 24, find th – InterviewSolution

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) If the 5th term of G.P. is 81 and the 2nd term is 24, find th

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The fifth term of a g.p. is 81 ---> ar^4 = 81second term is 24 -----> ar = 24

divide them:(ar^4)/(ar) = 81/24r^3 = 27/8r = 3/2

then in ar=24(3/2)a = 24a = 16

the GP is16, 24, 36, 54, 81, ...

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