Question

Find the sum of infinite G.P......90,60,40 ???​

Answer 1

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Answer 2

Here 90/60 = 3/2 also 60/40 =3/2
Hence common ratio r = 3/2
Formula for sum of gp for infinite terms ,
1/ 1-r
Therefore , 1/ 1-(3/2)
Hence sum of given gp is,
= 1/-1/2
= -2
Hence sum of given gp is -2
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