(8) छात्रों में से (2) छात्रों को पुस्तकालय कार्य के लिए चुनना है। कितने चयन संभव हैं?
(2) students are to be selected from (8) students for library work. How many selections are possible?
Explanation opens after your attempt
B. (28)
Concept
This is \(\binom{8}{2}=28\). If the work is same, order is not counted in selection.
Why this answer is correct
The correct answer is B. (28). This is \(\binom{8}{2}=28\). If the work is same, order is not counted in selection.
Exam Tip
यह \(\binom{8}{2}=28\) है। कार्य समान हो तो चयन में क्रम नहीं गिना जाता।
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