(7) डॉक्टरों और (4) नर्सों में से (2) डॉक्टर और (1) नर्स की टीम कितने तरीकों से बनेगी?
In how many ways can a team of (2) doctors and (1) nurse be formed from (7) doctors and (4) nurses?
Explanation opens after your attempt
C. (84)
Concept
The ways are \(\binom{7}{2}\binom{4}{1}=21\cdot4=84\). Count each condition separately.
Why this answer is correct
The correct answer is C. (84). The ways are \(\binom{7}{2}\binom{4}{1}=21\cdot4=84\). Count each condition separately.
Exam Tip
तरीके \(\binom{7}{2}\binom{4}{1}=21\cdot4=84\) हैं। शर्तों को अलग-अलग गिनें।
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