Compound Probability

What is the probability of landing on a number higher than 4 twice in a row?

What is the probability of drawing a blue marble twice with replacement?

What is the probability of picking a green marble, keeping it, then picking green again?

If you pick a red marble and keep it, how does that change the probability of getting a green marble when you pick a second time?

• No change

• More likely

• Less likely

• Impossible

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

P(blue)

What is the probability of rolling a 6 then landing on heads?

A number cube is rolled twice. What is the probability of getting a 6 on the first roll, then a number less than 5 on the second roll? 

• 2/3

• 5/36

• 1/9

• 1/36

The two spinners above are spun. What is the probability of getting a perfect square (1,4,9,16), then the letter Z? 

• 3/20

• 9/20

• 1/8

• 11/40

Jacob's piggy bank has 18 quarters, 20 dimes, 24 nickels, and 43 pennies. He chooses a coin, does not replace it, then chooses another. What is the probability that he chose a dime then a nickel?

• 9/52

• 4/91

• 44/105

• 11/26