\(^{n}C_r=\frac{^{n}P_r}{r!}\) का मुख्य कारण क्या है?
What is the main reason for \(^{n}C_r=\frac{^{n}P_r}{r!}\)?
Explanation opens after your attempt
A. Permutation में order counted होता है और combination में नहींOrder is counted in permutation but not in combination
Concept
To get unordered count from ordered count, (r!) orders are removed. In exams divide when order is ignored.
Why this answer is correct
The correct answer is A. Permutation में order counted होता है और combination में नहीं / Order is counted in permutation but not in combination. To get unordered count from ordered count, (r!) orders are removed. In exams divide when order is ignored.
Exam Tip
Ordered count से unordered count पाने के लिए (r!) orders हटाए जाते हैं। परीक्षा में order ignored हो तो divide करें।
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