Probability Review

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

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

What is the probability that the person picked will be a boy given they speak german? 

• .7273
• .4
• .16
• .22

Tags

CCSS.HSS.CP.A.4

What is the probability that they speak French given they are a girl? 

• 2.14
• .24
• .4
• .8571

Tags

CCSS.HSS.CP.A.4

Mary is a good student. The probability that she studies and passes her test is 3/5. If the probability that she studies is 8/9. What is the probability that she passes given that she studies? 

• 27/40
• 1.48
• .008
• .0593

Tags

CCSS.HSS.CP.B.6

You have 20 coins in your wallet, 9 quarters, 5 dimes, 2 nickels and 4 pennies. What is the probability of pulling out a dime?

• 1/4

• 5/10

• 5/20

• 15/20

Tags

CCSS.7.SP.C.7B

A spinner has a 1/5 chance of landing on green. How many times is this event likely to occur if you repeat the trial 85 times?

• 68
• 42.5
• 37
• 17

Tags

CCSS.7.SP.C.6

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