\[1+3+7+15+31+..........\]to \[n\]terms = [IIT 1963] – McqOptions

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1.	\[1+3+7+15+31+..........\]to \[n\]terms = [IIT 1963]
A.	\[{{2}^{n+1}}-n\]
B.	\[{{2}^{n+1}}-n-2\]
C.	\[{{2}^{n}}-n-2\]
D.	None of these
Answer» C. \[{{2}^{n}}-n-2\]

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