Sir, I already paid for the topic permutations and combinations in Mathematics. You have the hard copy of this topic, please forward that for me.

@nidhin 

which hard copy u are talking about >?? 
if u have already paid then u can get acess to mind map , video lessons , chapter wise problems , as well as prev year ques from that chapter and study planner , 
u can down these things in pdf files also , 
so ,in case of any issue in that let me know 
ALL THE BEST