(7) अध्यापकों में से (2) अध्यापकों की निगरानी टीम कितने तरीकों से चुनी जा सकती है?
In how many ways can an invigilation team of (2) teachers be selected from (7) teachers?
Explanation opens after your attempt
B. (21)
Concept
For the team, there are \(\binom{7}{2}=21\) selections. A team has no order.
Why this answer is correct
The correct answer is B. (21). For the team, there are \(\binom{7}{2}=21\) selections. A team has no order.
Exam Tip
टीम के लिए \(\binom{7}{2}=21\) चयन होंगे। टीम में क्रम नहीं होता।
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