(6) दंपतियों में से (5) व्यक्ति चुनने हैं जिनमें ठीक एक विवाहित जोड़ा शामिल हो। कुल चयन कितने हैं?
From (6) couples, (5) persons are chosen with exactly one married couple included. How many selections are possible?
Explanation opens after your attempt
C. (480)
Concept
Choose the couple \( \binom{6}{1} \), then (3) other couples \( \binom{5}{3} \), and one person from each \(2^3\), giving (480). After fixing exactly one couple, choose only one person from each remaining couple.
Why this answer is correct
The correct answer is C. (480). Choose the couple \( \binom{6}{1} \), then (3) other couples \( \binom{5}{3} \), and one person from each \(2^3\), giving (480). After fixing exactly one couple, choose only one person from each remaining couple.
Exam Tip
जोड़ा \( \binom{6}{1} \), बाकी (3) दंपति \( \binom{5}{3} \), और उनसे एक-एक व्यक्ति \(2^3\), कुल (480) है। ठीक एक जोड़ा रखने के बाद बाकी जोड़ों से केवल एक व्यक्ति चुनें।
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