I got awesome response to the previous MySQL Challenge. Awesome means, I got 6 responses, out of which 5 are correct (working) solutions and 2 are optimized solutions. You must be thinking, just 6 responses, but I am saying awesome. Yes, in my opinion quality is what matters, not quantity. I will explain the solution to that MySQL challenge in few more days. Before that, I am back with another small problem. This problem deals with numbers and simple mathematical calculations like addition.