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Mathematics
SOUMILI NAG's user avatar
SOUMILI NAG's user avatar
SOUMILI NAG's user avatar
SOUMILI NAG
  • Member for 3 years, 2 months
  • Last seen more than 2 years ago
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Double summation with restriction
May 12, 2021
2
value of $\frac{\sum_{k=0}^r{n\choose k}{n-2k\choose r-k}}{\sum_{k=r}^n {n\choose k}{2k\choose 2r} {(\frac{3}{4})}^{(n-k)}({\frac{1}{2}})^{2k-2r}}$ .
Jun 30, 2021
2
Find $\frac{({n\choose 1})(n-1)^3+({n\choose 3})(n-3)^3+...}{n^2(n+3)2^n}$ [duplicate]
Aug 21, 2021
1
Evaluating $\sum_{n=1}^{\infty}\frac{(n-1)!}{(x+1)(x+2)(x+3)\cdots(x+n)}$ for positive real $x$ [duplicate]
May 11, 2021