Louis Rhys
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 Sep 24 comment Proof: If n is a perfect square, $\,n+2\,$ is NOT a perfect square how to prove this one? May 29 awarded Commentator May 29 comment Teenager solves Newton dynamics problem - where is the paper? @Norbert care to explain? Sep 8 comment What is your favorite application of the Pigeonhole Principle? what does it have to do with the pigeonhole principle? Sep 8 comment What is your favorite application of the Pigeonhole Principle? I don't get it :( Aug 22 comment Why is $22/7$ a better approximation for $\pi$ than $3.14$? Can someone explain why @Paxinum answer is not correct? Aug 22 comment Why is $22/7$ a better approximation for $\pi$ than $3.14$? +1 for smartass answer Jul 4 comment Why can ALL quadratic equations be solved by the quadratic formula? @Mark Bennet. Why can't I divide by 2? Feb 21 awarded Editor Feb 21 revised What is so special about negative numbers $m$, $\mathbb{Z}[\sqrt{m}]$? link to explain PID (not everyone understand this) Feb 21 suggested approved edit on What is so special about negative numbers $m$, $\mathbb{Z}[\sqrt{m}]$? Jan 18 comment How come the number $N!$ can terminate in exactly $1,2,3,4,$ or $6$ zeroes but never $5$ zeroes? Question title should be edited imo Jan 12 comment Given an infinite number of monkeys and an infinite amount of time, would one of them write Hamlet? So no practical/meaningful number is larger than that? Jan 12 comment Given an infinite number of monkeys and an infinite amount of time, would one of them write Hamlet? "this is a very large number, but most numbers are larger" Is there any practical number larger than this? Number of atoms in the universe perhaps? Jan 4 awarded Autobiographer Jan 4 awarded Supporter Jan 4 comment An example of a real-world map that is not 4-colourable? Imperial Cities are not a single entity.