Hello students! I am Dr. Gajendra Purohit and today we are going to study random variable and this is very important part of statistics and probability and the part of probablity starts here , distributions mgf , cgf and the other test and everything we are going to discuss here so my overview that I have already told you before also by previous videos of engineering, mathematics , bsc students so you can watch them now students see students if you're facing any problem in understanding please clear some of your 12th concepts because it is important to clear the concepts so students now we will talk about probability mass function so students let's see a last question so by thus way we write this is called probability distribution system so by this question you can understand the concept of discrete random variable and probabltiy mass function and distribution function after this I will take what is continuous variable and what is density function and how do we take out the density of distribution function and some examples based on that so students keep watching and I feel my content is helping you and yes best of luck for your exams your exams will be going good and your efforts and mine too will also make a great impact thank you so much for watching my videos . please comment like, share and subscribe