Wednesday, September 24, 2008
just a simple logic-factorial-math countingMonday, September 22, 2008
this one is an easy- math question.Saturday, September 20, 2008
solve this math-surd form!Friday, September 19, 2008
how we can have a better happy life (3).Saturday, September 13, 2008
how to solve a Rubik's cube(4)...FINISHTuesday, September 9, 2008
how to solve a Rubik's cube(3)Sunday, September 7, 2008
how to solve a Rubik's cube(2)
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