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The sum of terms of a series is $\frac{2^n-1}{3}$.What is the type of series AP or GP. What is the value of d or r (common difference of AP or common ratio of GP)


1 Answer

Answer : (b) GP ,r=2
Explanation :
Since d is a function of n but r is independent of n, it is a GP with a common ratio r=2.
answered Dec 31, 2013 by yamini.v

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