\(^{11}C_5+^{11}C_6\) को बिना पूरा calculate किए किससे simplify किया जा सकता है?
Without full calculation, \(^{11}C_5+^{11}C_6\) can be simplified to what?
Explanation opens after your attempt
A. \(^{12}C_6\)
Concept
Pascal identity gives \(^{n}C_{r-1}+^{n}C_r=^{n+1}C_r\). In exams look for adjacent indices.
Why this answer is correct
The correct answer is A. \(^{12}C_6\). Pascal identity gives \(^{n}C_{r-1}+^{n}C_r=^{n+1}C_r\). In exams look for adjacent indices.
Exam Tip
Pascal identity में \(^{n}C_{r-1}+^{n}C_r=^{n+1}C_r\) होता है। परीक्षा में adjacent indices देखें।
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