यदि \(^{n}C_{5}:^{n}C_{4}=11:5\) है, तो (n) का मान क्या है?

If \(^{n}C_{5}:^{n}C_{4}=11:5\), what is the value of (n)?

Explanation opens after your attempt
Correct Answer

B. (15)

Step 1

Concept

\(\frac{^{n}C_{5}}{^{n}C_{4}}=\frac{n-4}{5}\). Equating it to \(\frac{11}{5}\) gives (n=15).

Step 2

Why this answer is correct

The correct answer is B. (15). \(\frac{^{n}C_{5}}{^{n}C_{4}}=\frac{n-4}{5}\). Equating it to \(\frac{11}{5}\) gives (n=15).

Step 3

Exam Tip

\(\frac{^{n}C_{5}}{^{n}C_{4}}=\frac{n-4}{5}\) होता है। इसे \(\frac{11}{5}\) के बराबर रखने पर (n=15)।

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Mathematics Answer, Explanation and Revision Hints

यदि \(^{n}C_{5}:^{n}C_{4}=11:5\) है, तो (n) का मान क्या है? / If \(^{n}C_{5}:^{n}C_{4}=11:5\), what is the value of (n)?

Correct Answer: B. (15). Explanation: \(\frac{^{n}C_{5}}{^{n}C_{4}}=\frac{n-4}{5}\) होता है। इसे \(\frac{11}{5}\) के बराबर रखने पर (n=15)। / \(\frac{^{n}C_{5}}{^{n}C_{4}}=\frac{n-4}{5}\). Equating it to \(\frac{11}{5}\) gives (n=15).

Which concept should I revise for this Mathematics MCQ?

\(\frac{^{n}C_{5}}{^{n}C_{4}}=\frac{n-4}{5}\). Equating it to \(\frac{11}{5}\) gives (n=15).

What exam hint can help solve this Mathematics question?

\(\frac{^{n}C_{5}}{^{n}C_{4}}=\frac{n-4}{5}\) होता है। इसे \(\frac{11}{5}\) के बराबर रखने पर (n=15)।