Question 872019
Re: TY, my recommendation would be to post review type questions on this site
as You did this one.
A simple random sample of size 3 is to be drawn from the population of 10 students. 
 What is the probability of any given individual being selected? 1/10
 How many different samples of size 3 are possible? 10C3 = {{{(10*9*8)/(2*3)}}}= 120
 What is the probability of any given sample of size 3 being selected? 1/120