1.

For a positive integer (n gt 1), Let a (n) = 1+ (1)/(2) + (1)/(3) + (1)/(4) ….... + (1)/( (2^(n) )-1) Then

Answer»

`a (100) lt 100`
`a ( 100 ) GT 100`
`a (20 ) = 100`
`a (200) ge 100`

ANSWER :A


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