\({}^{n}C_r=\frac{n}{r}{}^{n-1}C_{r-1}\) की counting व्याख्या क्या है?
What is the counting interpretation of \({}^{n}C_r=\frac{n}{r}{}^{n-1}C_{r-1}\)?
Correct answer and explanation
A. पहले एक marked member चुनें और फिर बाकी (r-1) चुनेंFirst choose one marked member and then choose remaining (r-1)
Simple Explanation
Marked member को (n) ways में चुनकर (r) possible marks के overcount को हटाते हैं। परीक्षा में member marking से ऐसी identities समझें। / Choose the marked member in (n) ways and remove overcount of (r) possible marks. In exams understand such identities by member marking.
Login to save your score, XP, coins and progress.
QR scan karne par isi question ka correct answer aur explanation khula hua milega.
Open answer link