(13) विद्यार्थियों में से कक्षा प्रतिनिधि समिति के लिए (2) विद्यार्थी कितने तरीकों से चुने जा सकते हैं?
In how many ways can (2) students be selected from (13) students for a class representative committee?
Explanation opens after your attempt
Correct Answer
B. (78)
Concept
It is only selection for a committee, so \(\binom{13}{2}=78\). If posts are not different, order is not counted.
Why this answer is correct
The correct answer is B. (78). It is only selection for a committee, so \(\binom{13}{2}=78\). If posts are not different, order is not counted.
Exam Tip
समिति के लिए केवल चयन है इसलिए \(\binom{13}{2}=78\) होगा। पद अलग न हों तो क्रम नहीं गिना जाता।
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