यदि ( \frac{(3n+1)!}{(3n-1)!}=156 ), तो (n) का मान क्या है?
If ( \frac{(3n+1)!}{(3n-1)!}=156 ), what is the value of (n)?
Explanation opens after your attempt
B. (4)
Concept
It is ((3n+1)(3n)=156), and \(13\cdot12=156\), so (3n=12) and (n=4). Identify the form and substitute.
Why this answer is correct
The correct answer is B. (4). It is ((3n+1)(3n)=156), and \(13\cdot12=156\), so (3n=12) and (n=4). Identify the form and substitute.
Exam Tip
यह ((3n+1)(3n)=156) है और \(13\cdot12=156\), इसलिए (3n=12) और (n=4)। रूप पहचानकर मान रखें।
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