The sum of the first 3 terms of a G....

The sum of the first 3 terms of a G.P is 16 and sum of next 3 terms of the same G.P is 128 ,then value of `( r/4 + 1 )` is where r = common ratio.

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The sum of the first 3 terms of a G.P is 16 and sum of next 3 terms of the same GP is 128 ,then value of ((r)/(4)+1) is where r= common ratio.

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