A student is allowed to select at most n-blocks from a collection of (2n + 1) books. If the total number of ways in which he can select a book is 63, find the value of n.

Question

Chetan Mandayam Nayakar · Answer

&Sigma; 2n+1 C r ,(from r=1 to r=n)=(2 2n+1 /2)-1=2 2n -1=63,n=3

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A student is allowed to select at most n-blocks from a collection of (2n + 1) books. If the total number of ways in which he can select a book is 63, find the value of n.

A student is allowed to select at most n-blocks from a collection of (2n + 1) books. If the total number of ways in which he can select a book is 63, find the value of n.

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