(15) अलग-अलग कार्डों में से (6) कार्ड चुनने हैं जिनमें दो निश्चित कार्डों में से ठीक एक कार्ड हो। कितने तरीके हैं?
From (15) distinct cards (6) cards are to be selected containing exactly one of two fixed cards. How many ways are there?
Explanation opens after your attempt
A. (2574)
Concept
Choose (1) of the two fixed cards and (5) cards from the remaining (13). The ways are \(\binom{2}{1}\binom{13}{5}=2574\).
Why this answer is correct
The correct answer is A. (2574). Choose (1) of the two fixed cards and (5) cards from the remaining (13). The ways are \(\binom{2}{1}\binom{13}{5}=2574\).
Exam Tip
दो निश्चित कार्डों में से (1) चुनें और बाकी (5) कार्ड (13) में से चुनें। तरीके \(\binom{2}{1}\binom{13}{5}=2574\) हैं।
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