`1 - 1/n + 1 - 2/n + 1/n - 3/n` + ... up to n terms = ?

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Q 1412323239.     `1 - 1/n + 1 - 2/n + 1/n - 3/n` + ... up to n terms = ?
A

`1/2 n `

B

`1/2 (n - 1) `

C

`1/2 n(n - 1) `

D

None of these

HINT


Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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