A student is allowed to select at most n books from a collection of (2n+1) books. If the total number of ways in which a student selects at least one book is 63. then n equals to -

Statement-1: A student is allowed to select at most n books from a collection of (2n+1) books. If the total number of ways in which he can select at least one book is 255, then n=3. sum_(r=1)^(n)""^(2n+1)C_(r)=2^(2n)

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

A person is permitted to selected at least one and at most n coins from a collection of (2n+1) distinct coins.If the total number o ways in which he can select coins is 255, find the value of n.

There are p copies each of n different books. Find the number of ways in which a nonempty selection can be made from them.