किस स्थिति में व्यवस्थाओं का सूत्र \(\frac{n!}{p!q!}\) उपयोग होगा?
In which situation is the arrangement formula \(\frac{n!}{p!q!}\) used?
Explanation opens after your attempt
B. जब दो प्रकार की वस्तुएँ क्रमशः (p) और (q) बार समान होंWhen two types of objects are identical (p) and (q) times respectively
Concept
Interchanges inside two identical groups are not counted separately so we divide by (p!q!). In exams place the factorial of each repeated group in the denominator.
Why this answer is correct
The correct answer is B. जब दो प्रकार की वस्तुएँ क्रमशः (p) और (q) बार समान हों / When two types of objects are identical (p) and (q) times respectively. Interchanges inside two identical groups are not counted separately so we divide by (p!q!). In exams place the factorial of each repeated group in the denominator.
Exam Tip
दो समानता समूहों की अदला-बदली अलग नहीं गिनी जाती इसलिए (p!q!) से भाग देते हैं। परीक्षा में हर repeated group का factorial हर में रखें।
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