Hi everyone I have this probability question that I don't understand what to do. Can someone give some help please. I would appreciate it if a detailed explaination if given so that I can follow along easily. Here are the questions.
What is the chance of winning the 1st prize of 649?
Three light bulbs are chosen at random from 15 bulbs of which 5 are defective. Find the probability p that [10 marks]
a) none is defective
b) exactly one is defective
c) at least one is defective