16 December 2012
Sometimes the right answer is listed twice but one of the two copies of the right answer will be marked as wrong (e.g two number 77 tiles listed when 77 is the right answer). It would also be nice if there were more categories of questions.
10 December 2012
This is a good math quiz. Even it is hard, I can train you to calculate quickly. It also has good interface. You should try it. I'm sure you will not be disappointed. Such a good apps :)