( \frac{(2n+1)!}{(2n-1)!} ) किसके बराबर है?
What is ( \frac{(2n+1)!}{(2n-1)!} ) equal to?
Explanation opens after your attempt
Correct Answer
B. ( (2n+1)(2n) )
Concept
((2n+1)!=(2n+1)(2n)(2n-1)!), so the answer is ((2n+1)(2n)). Do not skip the order in indexed factorials.
Why this answer is correct
The correct answer is B. ( (2n+1)(2n) ). ((2n+1)!=(2n+1)(2n)(2n-1)!), so the answer is ((2n+1)(2n)). Do not skip the order in indexed factorials.
Exam Tip
((2n+1)!=(2n+1)(2n)(2n-1)!), इसलिए उत्तर ((2n+1)(2n)) है। सूचक वाले फैक्टोरियल में भी क्रम न छोड़ें।
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