Question

Counting question

Answer 1

\(\large \color{black}{\begin{align}
& \normalsize \text{A student is allowed to select at most n books } \hspace{.33em}\\~\\
& \normalsize \text{from a collection of (2n+1) books. if the total number } \hspace{.33em}\\~\\
& \normalsize \text{of ways in which he can select at least one book is 63.find n} \hspace{.33em}\\~\\
& a.)\ 4 \hspace{.33em}\\~\\
& b.)\ 3 \hspace{.33em}\\~\\
& c.)\ 5 \hspace{.33em}\\~\\
& d.)\ 6 \hspace{.33em}\\~\\
\end{align}}\)