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5/2, 5/4, 5/8, ………… a(n) = ……………....

5/2, 5/4, 5/8, ………… `a_(n)` = …………….

A

`5/(2^(n-1))`

B

`5/(2^n)`

C

`5/(2^(n-2))`

D

None

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