VIDEO LECTURE ON PERMUTATIONS AND COMBINATIONS- BASIC PRINCIPLE OF COUNTING

VIDEO LECTURE ON PERMUTATIONS AND COMBINATIONS- BASIC PRINCIPLE OF COUNTING https://www.youtube.com/watch?v=tmcLbCcXT_w In the video I  explained about permutations and combinations-a basic principle of counting.Usually permutations and combinations comes under combinatorial analysis which is highly used in solving problems of probability theory.The basic principle of counting is simple and everyone must know it before going to probability.This video is useful for competitive exam preparation like IIT JAM,CSIR...