You haven’t gone in high school when you did not experience the beauty of solving mathematics and scientific problems. For many of us, we would normally say that what we have learned in our classrooms stay in our classroom. Instinctively we can solve our problem just by feeling the guts at the back of our mind. But how about we use it the way we take it on our business. Let us review some keys from our old subjects and open up our notes back in the old days.