What is \(\mathop \sum \limits_{{\rm{r\;}} = {\rm{\;}}0}^1 {{\rm{\;}}^ – McqOptions

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1.	What is \(\mathop \sum \limits_{{\rm{r\;}} = {\rm{\;}}0}^1 {{\rm{\;}}^{{\rm{n}} + {\rm{r}}}}{{\rm{C}}_{\rm{n}}}\) equal to?
A.	n + 2C1
B.	n + 2Cn
C.	n + 3Cn
D.	n + 2Cn - 1
Answer» B. n + 2Cn

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