Compound Probability

What is the probability of rolling a 4 on a fair number cube and getting “tails” when tossing a coin?

• 1/7

• 1/12

• 5/8

• 1/2

What is P(A or B) if P(A) = 1/4 and P(B) = 1/2, where A and B are overlapping events?

• 1/7

• 1/12

• 5/8

• 1/2

What is the probability of the arrow stopping on “1” on the first spin and “6” on the second spin?

• 5/6

• 1/36

• 1/6

• Elephant

What is the probability of the arrow stopping on a consonant or one of the first 4 letters of the alphabet?

• 5/6

• 1/36

• 1/3

• 1/6

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 yellow or green?

• 1 / 16

• 1 ⁄ 6

• 1 ⁄ 8

• 3 ⁄ 4

A bag contains 5 blue marbles, 4 red marbles, and 3 orange marbles. Mrs. Cox picks one without looking, replaces it and picks another one. What is the probability that she picks two that are not orange? 

• 9/16

• 3/4

• 9/144

• 5/16

In the game that Tony is playing, there is a 1/8 chance the spinner will land on red and a 3/8 chance that the spinner will land on yellow.   What is the probability that Tony will NOT spin red, then will spin red?

• 7/64

• 7/16

• Other

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

When using a 6-sided number cube, what is the probability or rolling a 3, then not rolling a 3, and then rolling an even number?

• 1/12

• 1/2

• 5/6

• 5/72

You roll a six sided die. What is the probability of rolling an even number three times in a row? 

• 3/100

• 1/2

• 1/6

• 1/8