( \frac{(3n+1)!}{(3n-1)!} ) किसके बराबर है?
What is ( \frac{(3n+1)!}{(3n-1)!} ) equal to?
Explanation opens after your attempt
A. ( (3n+1)(3n) )
Concept
((3n+1)!=(3n+1)(3n)(3n-1)!), so two factors remain. Handle the indexed term as one unit.
Why this answer is correct
The correct answer is A. ( (3n+1)(3n) ). ((3n+1)!=(3n+1)(3n)(3n-1)!), so two factors remain. Handle the indexed term as one unit.
Exam Tip
((3n+1)!=(3n+1)(3n)(3n-1)!), इसलिए दो गुणक बचते हैं। सूचक वाले पद को एक इकाई की तरह संभालें।
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