(10) शिक्षकों और (12) छात्रों में से (7) लोगों का समूह बनाना है जिसमें कम से कम (3) शिक्षक हों। कितने तरीके हैं?
From (10) teachers and (12) students a group of (7) people is to be formed with at least (3) teachers. How many ways are there?
Explanation opens after your attempt
C. (124872)
Concept
The number of teachers can be (3), (4), (5), (6), or (7). The sum of all these cases is (124872).
Why this answer is correct
The correct answer is C. (124872). The number of teachers can be (3), (4), (5), (6), or (7). The sum of all these cases is (124872).
Exam Tip
शिक्षक (3), (4), (5), (6) या (7) हो सकते हैं। इन सभी मामलों का योग (124872) है।
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