यदि \(^{n}C_{4}=^{n}C_{6}\) है, तो (n) का मान क्या है?
If \(^{n}C_{4}=^{n}C_{6}\), what is the value of (n)?
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Correct Answer
C. (10)
Concept
For same (n), \(^{n}C_{r}=^{n}C_{s}\) implies (r=s) or (r+s=n). Here (n=10).
Why this answer is correct
The correct answer is C. (10). For same (n), \(^{n}C_{r}=^{n}C_{s}\) implies (r=s) or (r+s=n). Here (n=10).
Exam Tip
समान (n) के लिए \(^{n}C_{r}=^{n}C_{s}\) होने पर (r=s) या (r+s=n)। यहां (n=10) है।
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