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# 60 Actions

 Jul 24 awarded Notable Question Apr 21 awarded Popular Question Sep 24 awarded Autobiographer Jul 2 awarded Curious Jun 15 awarded Popular Question Nov 26 awarded Popular Question Aug 13 awarded Yearling Sep 8 accepted Evaluate the following limit: $\lim_{n\to\infty}\left(\sum_{r=1}^{n}{\frac{r}{n^{2}+n+r}}\right)$ Sep 8 accepted Perimeter of an ellipse Sep 8 answered Evaluate the following limit: $\lim_{n\to\infty}\left(\sum_{r=1}^{n}{\frac{r}{n^{2}+n+r}}\right)$ Sep 8 asked Evaluate the following limit: $\lim_{n\to\infty}\left(\sum_{r=1}^{n}{\frac{r}{n^{2}+n+r}}\right)$ Sep 8 awarded Critic Sep 5 revised What about without replacement added 1 characters in body Sep 5 comment What about without replacement What about the probability of picking out the spade from the remaining 49 cards? Sep 5 comment What about without replacement But here I can get a spade in the first draw as well. This is the probability there is a spade in at least one of the four draws Sep 5 answered What about without replacement Sep 5 answered Perimeter of an ellipse Sep 5 accepted How do I integrate this expression: $\int{2x\,dx\over x^3+x^{2/3}}$? Sep 5 accepted Prove that square root of 2 is irrational using the principle of Mathematical Induction Sep 5 accepted Find the fallacy in the following treatment