A jar contains 8 red marbles, numbered 1 to 8, and 11 blue

Last updated: 8/8/2022

A jar contains 8 red marbles, numbered 1 to 8, and 11 blue marbles numbered 1 to 11. a) A marble is chosen at random. If you're told the marble is red, what is the probability that it has the number 7 on it? b) The first marble is replaced, and another marble is chosen at random. If you're told the marble has the number 1 on it, what is the probability the marble is red?