\({}^{7}P_{2}\) का मान क्या है?
What is the value of \({}^{7}P_{2}\)?
Explanation opens after your attempt
A. (42)
Concept
\({}^{7}P_{2}=7\times6=42\). For small (r), multiply (r) decreasing factors.
Why this answer is correct
The correct answer is A. (42). \({}^{7}P_{2}=7\times6=42\). For small (r), multiply (r) decreasing factors.
Exam Tip
\({}^{7}P_{2}=7\times6=42\) होता है। छोटे (r) के लिए घटते हुए (r) गुणनखंड लें।
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