(15) विद्यार्थियों में से (2) विद्यार्थियों की जोड़ी चुनने के कितने तरीके हैं?
How many ways are there to select a pair of (2) students from (15) students?
Explanation opens after your attempt
A. (105)
Concept
The number of ways is \(\binom{15}{2}=105\). Order is not counted in a pair.
Why this answer is correct
The correct answer is A. (105). The number of ways is \(\binom{15}{2}=105\). Order is not counted in a pair.
Exam Tip
जोड़ी चुनने के तरीके \(\binom{15}{2}=105\) हैं। जोड़ी में क्रम नहीं गिना जाता।
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