Question

This is a review of last lesson's concept You have 2 red marbles, 3 black marbles, and 2 blue marbles. You pick a marble, look at it, and replace it in the bag Then you pick a marble again. What is the probability of picking a red marble both times?​

Answer 1

You add all of them up and then you get 7 so now you know you have a total of 7 marbles but you have 2 red marbles so it’s 2/7