The sum to n terms of the series \[\frac{1}{2}+\frac{3}{4}+\frac{7}{8}+\frac{15}{16}+..........\] is

The sum to n terms of the series \[\frac{1}{2}+\frac{3}{4}+\frac{7}{8}

1.	The sum to n terms of the series \[\frac{1}{2}+\frac{3}{4}+\frac{7}{8}+\frac{15}{16}+..........\] is
A.	\[n-1-{{2}^{-n}}\]
B.	1
C.	\[n-1+{{2}^{-n}}\]
D.	\[1+{{2}^{-n}}\]
Answer» D. \[1+{{2}^{-n}}\]

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The sum to n terms of the series \[\frac{1}{2}+\frac{3}{4}+\frac{7}{8}+\frac{15}{16}+..........\] is

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