This so called Brilliant tutorials/cheating p. ltd., is big fraud company. in the name of education they are doing purely money minting business. you can find the material from FIITJEE and other big players in the market. these people.
Simply copy the material and claims that it is their own. more over this cheating company management is very strict in collecting fees from students irrespective of the conducting classes and delivering the material. I strongly recommend please think twice or thrice before join this pseudo educational institute.