A bag contains 2 red marbles, 3 green marbles, and 5 blue marbles. Elizabeth draws a marble from the bag, replaces the marble, and draws another marble. What is the probability she draws 2 red marbles?
2 red, 3 green, 5 blue....total of 10 marbles P(1st one is red) = 2/10 which reduces to 1/5 replaces the marble P(2nd one is red) = 2/10 which reduces to 1/5
