\({}^{n}C_r\) को (\frac{n(n-1)\cdots(n-r+1)}{r!}) लिखना किस connection को दिखाता है?
Writing \({}^{n}C_r\) as (\frac{n(n-1)\cdots(n-r+1)}{r!}) shows which connection?
Explanation opens after your attempt
A. Permutation count को (r!) से divide करके combination मिलता हैCombination is obtained by dividing permutation count by (r!)
Concept
The numerator is \(^{n}P_r\) and the denominator removes order. In exams use this form for quick numerical cancellation.
Why this answer is correct
The correct answer is A. Permutation count को (r!) से divide करके combination मिलता है / Combination is obtained by dividing permutation count by (r!). The numerator is \(^{n}P_r\) and the denominator removes order. In exams use this form for quick numerical cancellation.
Exam Tip
Numerator \(^{n}P_r\) है और denominator order हटाता है। परीक्षा में इस form से numerical cancellation जल्दी करें।
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