Mathematics is a conceptual subject. It needs hard work to attain perfection in mathematics. It is a subjective thought. In the present era where SSC, Banking, Management etc. examination are based on objective pattern, aspirants generally go for tricky approach. It is a must for the present examination pattern. However most of the books available in the market just provide results, tricks, questions and aspirants try to memorize all the tricks. But you cannot carry the tricks for long, if you do not know its origin.