If second, sixth and eighth term of AP are consecutive of GP. Find the common ratio of GP.
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Step-by-step explanation:
a+5d/a+d=a+7d/a+5d
a+5d*a+5d=a+7d*a+d
a^2+10ad+25d^2=a^2+ad+7d^2
10ad-ad=7d^2-25d^2
9ad+18d^2=0
9d(a+2d)=0
a+2d=0
d=-a/2
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