(8) दंपतियों में से (4) व्यक्ति चुनने हैं, पर कोई विवाहित जोड़ा साथ नहीं चुना जाना चाहिए। कुल चयन कितने हैं?
From (8) couples, (4) persons are chosen, but no married couple should be selected together. How many selections are possible?
Explanation opens after your attempt
D. (1120)
Concept
First choose (4) couples and then (1) person from each, giving \( \binom{8}{4}2^4=1120 \). Choosing only one from a couple gives (2) choices.
Why this answer is correct
The correct answer is D. (1120). First choose (4) couples and then (1) person from each, giving \( \binom{8}{4}2^4=1120 \). Choosing only one from a couple gives (2) choices.
Exam Tip
पहले (4) दंपति चुनें और हर दंपति से (1) व्यक्ति लें, \( \binom{8}{4}2^4=1120 \)। जोड़े से केवल एक चुनने पर (2) विकल्प बनते हैं।
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