\(^{n}P_r\) और \(n^r\) के बीच मुख्य अंतर क्या है?
What is the main difference between \(^{n}P_r\) and \(n^r\)?
Explanation opens after your attempt
A. \(^{n}P_r\) में पुनरावृत्ति नहीं और \(n^r\) में पुनरावृत्ति allowed होती है\(^{n}P_r\) has no repetition and \(n^r\) allows repetition
Concept
In permutation a chosen object does not appear again but in \(n^r\) every position has all choices. In exams always read the repetition condition.
Why this answer is correct
The correct answer is A. \(^{n}P_r\) में पुनरावृत्ति नहीं और \(n^r\) में पुनरावृत्ति allowed होती है / \(^{n}P_r\) has no repetition and \(n^r\) allows repetition. In permutation a chosen object does not appear again but in \(n^r\) every position has all choices. In exams always read the repetition condition.
Exam Tip
Permutation में चुनी गई वस्तु दोबारा नहीं आती लेकिन \(n^r\) में हर स्थान पर सभी विकल्प मिलते हैं। परीक्षा में repetition condition जरूर पढ़ें।
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