A bag contains 6 white marbles, 3 yellow marbles, and 9 red marbles. What is the probability of drawing a white marble then a red marble if the first marble was replaced before the second was chosen?

In a number guessing game you ask a person to guess a number from one 1 to 10. If the person makes a random guess, what is the probability their guess will be less than 5?

A bag contains 3 green marbles, 9 red marbles, and 6 yellow marbles. What is the probability of drawing a green marble then a yellow marble if the first marble was not replaced?