\(^{n}P_r\) में (r=2) रखने पर कौन-सा result मिलता है?

What result is obtained by putting (r=2) in \(^{n}P_r\)?

Explanation opens after your attempt
Correct Answer

A. (n(n-1))

Step 1

Concept

For two ordered positions the choices are (n) and (n-1). In exams treat \(^{n}P_2\) as the ordered pair formula.

Step 2

Why this answer is correct

The correct answer is A. (n(n-1)). For two ordered positions the choices are (n) and (n-1). In exams treat \(^{n}P_2\) as the ordered pair formula.

Step 3

Exam Tip

दो क्रमबद्ध स्थानों के लिए choices (n) और (n-1) हैं। परीक्षा में \(^{n}P_2\) को ordered pair formula मानें।

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Mathematics Answer, Explanation and Revision Hints

\(^{n}P_r\) में (r=2) रखने पर कौन-सा result मिलता है? / What result is obtained by putting (r=2) in \(^{n}P_r\)?

Correct Answer: A. (n(n-1)). Explanation: दो क्रमबद्ध स्थानों के लिए choices (n) और (n-1) हैं। परीक्षा में \(^{n}P_2\) को ordered pair formula मानें। / For two ordered positions the choices are (n) and (n-1). In exams treat \(^{n}P_2\) as the ordered pair formula.

Which concept should I revise for this Mathematics MCQ?

For two ordered positions the choices are (n) and (n-1). In exams treat \(^{n}P_2\) as the ordered pair formula.

What exam hint can help solve this Mathematics question?

दो क्रमबद्ध स्थानों के लिए choices (n) और (n-1) हैं। परीक्षा में \(^{n}P_2\) को ordered pair formula मानें।