TS EAMCET · Maths · Permutation Combination
A student is allowed to select at least \((n+1)\) books but not all books from a collection of \((2 n+1)\) books. If the total number of ways in which he can select these books is 255, then the number of books in that collection is
- A 4
- B 9
- C 10
- D 7
Answer & Solution
Correct Answer
(B) 9
Step-by-step Solution
Detailed explanation
The total number of collection of atleast \((n+1)\) books from \((2 n+1)\) books is,…
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