A) 2
B) 3
C) 4
D) 5
Correct Answer: B
Solution :
Let there be \[2n\] terms in the given G.P. with first term \[a\]and the common ratio\[r\]. Then, \[a\frac{({{r}^{2n}}-1)}{(r-1)}=5a\frac{({{r}^{2n}}-1)}{({{r}^{2}}-1)}\]\[\Rightarrow \]\[r+1=5\]\[\Rightarrow \]\[r=4\].You need to login to perform this action.
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