@Moose72 Yep, you are right. It takes a while to realize that you have made a mistake on a math problem. And even us math 'geeks' do it too. For example, in my latest math class (Trig), we were working on Matrices (ugh!). I was about 3 pages in to this same problem when I finally came up with a solution. Looked at the answer that it was supposed to be, only to find out I had it wrong. So now the hunt begins as to where I messed up. Come to find out, I had missed a smiple arithmetic problem about 3/4 the way down page 1.

Yes it can be frustrating, but anything that comes easy is typically not worth doing (in my opinion ofc)