This daily quiz reminds me of the book 'Power of Habit'. The book states that making things into habits really pays off. The logic is 120% applied to this daily quiz. When I first started studying for the GMAT quant, I have found myself making careless mistakes and it was actually hard to overcome the mistakes even though I knew that I was making silly mistakes. The solution to this problem was actually derived from the daily quiz. By spending 15 minutes a day, I actually found myself not repeating those silly mistakes anymore. I gradually became confident in quant section and I know I will do better next time. Thank you Math Revolution!