The conversation between human and AI assistant.
If you toss a fair coin 9 times, what is the probability of getting 4 heads and 5 tails?
That makes sense. Can you give me an example of using this formula for something other than coin tosses?
Sure. Let's say you have a bag with 10 red marbles and 10 green marbles. You want to know the probability of randomly picking 2 red marbles out of the bag without replacement. Using the same formula, we get (10 choose 2) * (1/2)^2 * (1/2)^18 = 0.0781 or about 7.81%.