पास्कल संबंध \(^{n}C_r=^{n-1}C_r+^{n-1}C_{r-1}\) में \(^{n-1}C_{r-1}\) किस स्थिति को दिखाता है?
In Pascal's relation \(^{n}C_r=^{n-1}C_r+^{n-1}C_{r-1}\) what does \(^{n-1}C_{r-1}\) represent?
Explanation opens after your attempt
C. विशेष वस्तु को चुनकर बाकी (r-1) चुननाChoosing the special object and then choosing remaining (r-1)
Concept
If the special object is chosen the remaining (r-1) objects must be chosen from (n-1). In exams write the included case separately.
Why this answer is correct
The correct answer is C. विशेष वस्तु को चुनकर बाकी (r-1) चुनना / Choosing the special object and then choosing remaining (r-1). If the special object is chosen the remaining (r-1) objects must be chosen from (n-1). In exams write the included case separately.
Exam Tip
यदि विशेष वस्तु चुनी गई है तो बाकी (r-1) वस्तुएँ (n-1) में से चुननी होंगी। परीक्षा में included case को अलग लिखें।
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