easiest chapter in the world.....
Every chapter is easy in mathematics. The thing which matter is how much practice of the same you had done?
Mathematics is a kind of subject which demands a lot of practice and after practicing you found the concepts being easier. So, the only mantra to get success in mathematics is 'Practice'.
For practice you can refer to the chapter tests, formative assessments, test generator, model test etc. and if you face any problem in any question then do get back to us.