If \[n\] be odd or even, then the sum of \[n\] terms of the series \[1-2+\] \[3-\]\[4+5-6+......\] will be

If \[n\] be odd or even, then the sum of \[n\] terms of the series \[1

1.	If \[n\] be odd or even, then the sum of \[n\] terms of the series \[1-2+\] \[3-\]\[4+5-6+......\] will be
A.	\[-\frac{n}{2}\]
B.	\[\frac{n-1}{2}\]
C.	\[\frac{n+1}{2}\]
D.	\[\frac{2n+1}{2}\]
Answer» D. \[\frac{2n+1}{2}\]

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If \[n\] be odd or even, then the sum of \[n\] terms of the series \[1-2+\] \[3-\]\[4+5-6+......\] will be

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