किस identity को \(^{n}C_r+^{n}C_{r-1}=^{n+1}C_r\) के रूप में लिखा जा सकता है?
Which identity can be written as \(^{n}C_r+^{n}C_{r-1}=^{n+1}C_r\)?
Explanation opens after your attempt
Correct Answer
B. Pascal identity
Concept
This is a shifted form of Pascal identity. In exams add adjacent lower-row combinations to form the upper-row combination.
Why this answer is correct
The correct answer is B. Pascal identity. This is a shifted form of Pascal identity. In exams add adjacent lower-row combinations to form the upper-row combination.
Exam Tip
यह Pascal identity का shifted रूप है। परीक्षा में adjacent lower-row combinations जोड़कर upper-row combination बनाएं।
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