यदि \(\frac{(n+5)!}{(n+3)!}=210 \), तो (n) का मान क्या है?
If \( \frac{(n+5)!}{(n+3)!}=210\), what is the value of (n)?
Explanation opens after your attempt
B. (9)
Concept
It gives \((n+5)(n+4)=210\), and \(15\cdot14=210\). Therefore, (n=10).
Why this answer is correct
The correct answer is B. (9). It gives \((n+5)(n+4)=210\), and \(15\cdot14=210\). Therefore, (n=10).
Exam Tip
यह \((n+5)(n+4)=210\) देता है और \(15\cdot14=210\)। इसलिए (n+5=15) और (n=10) नहीं, सही (n=10) है।
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