View profile information
Earned on 12 Mar 2013 for solving Problem 1. Times 2 - START HERE.
Earned on 13 Mar 2013 for commenting on Solution 181405.
Earned on 13 Mar 2013 for liking Solution 204798.
Create a problem.
Earned on 19 Nov 2014 for first solving Problem 2672. Largest Geometric Series.
Earned on 13 Nov 2014 for solving all the problems in CUP Challenge.
Earned on 9 Feb 2015 for submitting the best solution Solution 577884.
Must have 50 solvers for a problem you created.
Earned on 14 Nov 2014 for solving all the problems in Tiles Challenge.
Earned on 22 Jan 2015 for solving all the problems in ASEE Challenge.
Earned on 20 Jan 2015 for solving all the problems in Cody Challenge.
Create 10 problems.
Earned on 9 Feb 2015 for solving 500 problems.
Solve all the problems in Modeling and Simulation Challenge problem group.
Solve all the problems in Magic Numbers problem group.
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.
Choose your country to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a location from the following list:
See all countries