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For a positive integer n , let a(n) =...

For a positive integer n , let `a(n) = 1+ 1/2 + 1/3 +…+ 1/(2^(n)-1)` : Then

A

`a(100) le 100`

B

`a(100) gt 100`

C

`a(200) le 100`

D

`a(200) lt 100`

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A
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