Compound Probability

Ricardo has the spinner pictured here and a bag of marbles filled with 2 red marbles, 3 green marbles, and 3 blue marbles. What is the probability that Ricardo spins red on the spinner and picks a red marble out of the bag?

• 1 ⁄ 16
• 1 ⁄ 2
• 1 ⁄ 4
• 1 ⁄ 8

How many outcomes are there with tossing a coin and rolling a dice?

• 2
• 6
• 12
• 24

What is the probability of picking a blue marble, putting it back in the bag, then picking a red marble?

If you spin two times, what is the probability of landing on green both times?

A coin and a number cube with the numbers 1 through 6 are tossed. What is the probability of the coin showing tails and the number cube showing the number 3? 

• 1/12
• 1/4
• 1/8
• 1/2

• 1/4
• 1/8
• 1/2
• 1/6

• 1/8
• 1/2
• 1/24
• 1/16

How do you find compound probability?

• Multiply your probabilities
• Add your probabilities
• Divide your probabilities
• Subtract your probabilities

Lucy has the spinner pictured and spins it twice in a row. What is the probability that she lands on blue first and then on green?

• 1 / 16
• 1 ⁄ 6
• 1 ⁄ 8
• 3 ⁄ 4

In a box there are 3 red pens, 2 green pens, and 1 blue pen. What is the probability of picking a red pen, replacing it, and then picking a green pen?

• 1/2
• 4/11
• 1/6
• 2/3