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In a G.P. consisting of positive terms, each term equals the sum of the next two terms. Then common ratio of the G.P. is
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a
12(1-5)
b
125
c
5
d
125-1
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Correct option is D
We are given arn=arn+1+arn+2∀n≥1⇒ 1=r+r2⇒r2+r−1=0⇒r=12(−1±5)As G.P. is of positive terms, r>0. Thus, r=125-1Similar Questions
If the roots of the equation,
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