यदि \(^{12}P_4=^{12}C_4\cdot x\) है तो (x) का सही मान क्या है?
If \(^{12}P_4=^{12}C_4\cdot x\), what is the correct value of (x)?
Explanation opens after your attempt
C. (4!)
Concept
The (4) selected objects are arranged in (4!) ways. In exams write (x=r!).
Why this answer is correct
The correct answer is C. (4!). The (4) selected objects are arranged in (4!) ways. In exams write (x=r!).
Exam Tip
(4) चुनी गई वस्तुओं को (4!) तरीकों से arrange किया जाता है। परीक्षा में (x=r!) लिखें।
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