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Dear Shashank,
first compare (2n-1)! and (2n+1) and forget the division for right nowthe first 5 terms of (2n-1) are --> (2n-1)(2n-2)(2n-3)(2n-4)(2n-5)...the first 5 terms of (2n+1) are --> (2n+1)(2n)(2n-1)(2n-2)(2n-3)...so you can see that after the first two terms of (2n+1)!, it is exactly identical to (2n-1)!, so therefore everything except (2n+1) and (2n) cancel out, resulting in the answer 1 / 2n(2n+1)
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Aman Bansal
Askiitian Expert
Please dont post same query repeatedly.....!!!!
this is not factorrial ans is 2 explain how
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