\(^{n}P_r=^{n}C_r\times r!\) की व्याख्या किस वाक्य से सही होती है?
Which sentence correctly explains \(^{n}P_r=^{n}C_r\times r!\)?
Explanation opens after your attempt
Correct Answer
A. पहले चुनो फिर चुनी वस्तुओं को जमाओFirst choose then arrange the chosen objects
Concept
Permutation includes both selection and arrangement. In exams multiply by (r!) to connect (P) with (C).
Why this answer is correct
The correct answer is A. पहले चुनो फिर चुनी वस्तुओं को जमाओ / First choose then arrange the chosen objects. Permutation includes both selection and arrangement. In exams multiply by (r!) to connect (P) with (C).
Exam Tip
Permutation में selection और arrangement दोनों शामिल होते हैं। परीक्षा में (P) को (C) से जोड़ने के लिए (r!) गुणा करें।
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