Scientist and software developer by day, musician and blogger by night. Check out Mighty Bargain Hunter for my personal finance blog.
54 If a prime number is reversed, and then appended to itself, why is the result always a composite number? jan 6 '15
12 How many even 3 digit numbers contain at least one 7. nov 17 '14
12 Prime factors of a factorial dec 16
10 Why does $r = \cos \theta$ produce a circle? dec 10 '13
8 Find integral when $dx$ is in the numerator feb 8 '14
8 $n$ is twice the sum of squares of digits of $n$ dec 10 '14