Dan

Earned on 5 Jul 2012 for solving Problem 2. Make the vector [1 2 3 4 5 6 7 8 9 10].

Earned on 28 Feb 2013 for liking Solution 108804.

Earned on 8 Jan 2013 for commenting on Solution 183475.

Earned on 8 Mar 2013 for first solving Problem 1325. Special matrix.

Earned on 8 Mar 2013 for creating Problem 1325. Special matrix.

Earned on 6 Jul 2012 for submitting the best solution Solution 107182.

Earned on 17 May 2013 at 11:40 for solving all the problems in Tiles Challenge.

Must have 50 solvers for a problem you created.

Solve all the problems in Cody Challenge problem group.

Solve all the problems in ASEE Challenge problem group.

Create 10 problems.

Solve 500 problems.

Must receive 25 total likes for the problems you created.

Must receive 50 total likes for the solutions you submitted.

Must receive 10 likes for a solution you submitted.

Must receive 10 likes for a problem you created.