(14) विद्यार्थियों में से (7) की टीम बनानी है जिसमें (3) विशेष विद्यार्थी या तो सभी शामिल हों या सभी बाहर हों। कितने तरीके हैं?
From (14) students a team of (7) is to be formed in which (3) special students are either all included or all excluded. How many ways are there?
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B. (660)
Simple Explanation
सभी विशेष शामिल हों तो \(\binom{11}{4}=330\) और सभी बाहर हों तो \(\binom{11}{7}=330\) तरीके हैं। कुल (660) है। / If all special students are included there are \(\binom{11}{4}=330\) ways and if all are excluded there are \(\binom{11}{7}=330\) ways. The total is (660).
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