Apparently, this user prefers to keep an air of mystery about them.
7 Why do we need to learn integration techniques? aug 31 '12
4 MENSA IQ Test and rules of maths feb 12 '14
3 Find minimum planks for constructing surface sep 10 '12
0 Find, inside a large circle, the maximum number of small circles placed 60 degrees to each other and nov 22 '12