Question

You have a pot with 100 balls. 20 of them are red, 50 are blue and 30 are green. you decide to draw 5 balls from the pot without replacement (i.e. you don't put a ball back in the pot once it has been taken out). what is the probability of drawing five blue balls?

Answer 1

The probability of drawing exactly 5 blue balls is found as follows:
P(5 blue balls) = (50C5)/(100C5) = 0.02814 to 5 decimal places.