Question

What is the chance of drawing a yellow ball then a red ball from a bag containing 3 yellow balls and 7 red balls?

Answer 1

First, there are 10 balls in a bag, and the probability of drawing a yellow ball is 3/10, so now there will be 9 balls left in the bag, so the probability of drawing the red ball will be 7/9, so the answer will be 21/90 or 7/30 for a chance of drawing the yellow ball than the red ball. Hope it help!