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If the sum of an infinitely decreasing G.P. is 3, and the sum of the squares of its terms is `9//2`, the sum of the cubes of the terms is

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If the sum of an infinitely decreasing G.P. is 3, and the sum of the squares of its terms is `9//2`, the sum of the cubes of the terms is
A. `(105)/(13)`
B. `(108)/(13)`
C. `(729)/(8)`
D. `(128)/(13)`
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Correct Answer - B
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