यदि \(^{n}C_{2}=105\) है, तो \(^{n}C_{3}\) का मान क्या होगा?
If \(^{n}C_{2}=105\), what is the value of \(^{n}C_{3}\)?
Explanation opens after your attempt
C. (455)
Concept
From \(^{n}C_{2}=105\), we get (n=15). Therefore \(^{15}C_{3}=455\).
Why this answer is correct
The correct answer is C. (455). From \(^{n}C_{2}=105\), we get (n=15). Therefore \(^{15}C_{3}=455\).
Exam Tip
\(^{n}C_{2}=105\) से (n=15) मिलता है। इसलिए \(^{15}C_{3}=455\)।
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