(10) विद्यार्थियों को (5) और (5) के दो अनाम समूहों में बांटना है। कितने तरीके होंगे?
(10) students are to be divided into two unnamed groups of (5) and (5). How many ways are possible?
Explanation opens after your attempt
A. (126)
Concept
First choose (5) students in \(^{10}C_{5}\) ways. Since the two groups are unnamed, divide by (2) to get (126).
Why this answer is correct
The correct answer is A. (126). First choose (5) students in \(^{10}C_{5}\) ways. Since the two groups are unnamed, divide by (2) to get (126).
Exam Tip
पहले (5) विद्यार्थी \(^{10}C_{5}\) तरीकों से चुने जाते हैं। दो समूह अनाम हैं, इसलिए (2) से भाग दें और उत्तर (126) है।
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