(March 18, 2020 at 5:19 am)WinterHold Wrote: I have a probability question that I need to solve:
A set S is composed of 20 multi-colored objects. 4 objects were chosen randomly from S.
What is the probability that 3 of the chosen objects be blue; knowing that there are 8 blue objects in S ?
Zero. The question clearly states that "A set S is composed of 20 multi-colored objects." None of them are blue, so it doesn't matter how many of them you pick.
Better question: If you try and get the internet to do your homework for you what are the odds that one of the replies is actually your mom's phone number?