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richrow

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 4 months
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  • Last seen 17 hours ago

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Top posts (23) All Questions Answers | Votes Newest

6 Show that $(\binom{p^2}{p} -p ) $ is divisible by $p^5$, for every prime number $p, p\ge 5$ Apr 15
3 Help in solving this geometry problem Mar 25
3 Counting,Proability and Binomial Coefficients Jan 13
3 $[ABC]=s \cdot r$ (where s is the semi-perimeter and r is the inradius) Jan 23
3 Combinatorial Proof (Argument) Mar 24
2 What is the length of $x$ in this pentagon diagram? Mar 24
2 Given $S_n = 1 + \sum_{k=1}^n {1\over k!}$ prove that $e-S_n \le \frac{n+2}{n!(n+1)^2}$ Jan 21
2 Prove that $EE' \perp BC$. Mar 22
2 Isogonal conjugation in quadrilaterals Mar 25
2 Show that there are at most $n^2$ roads. Jan 11
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