Probability Review

A regular 6-sided die is to be rolled one time. What is the probability that the number 5 is rolled?

• 1/5

• 5/6

• 1/6

• 6/5

Tags

CCSS.7.SP.C.7A

A regular 6-sided die is to be rolled once. What is the probability that a number less than or equal to 4 is rolled?

• 1/2

• 1/4

• 5/6

• 2/3

Tags

CCSS.7.SP.C.7B

A spinner has 8 equal regions. Each region is marked with one of the following numbers: 10, 20, 30, 40, 50, 60, 70, 80. What is the probability of an even number being spun on the first roll?

• 1/8

• 1/2

• 1

• 3/8

Tags

CCSS.7.SP.C.7A

There are 3 red marbles, 4 blue marbles, 2 green marbles, and 6 clear marbles in a burlap bag. One marble is randomly pulled from the bag. What is the probability the marble was green?

• 1/2

• 1/7

• 2/15

• 2/17

Tags

CCSS.7.SP.C.7B

Sarah, Sammie, Victor, Vicki, and Valerie are in math group. Two students are randomly picked to be the co-leaders. What is the probability that the students picked were Sammie and Victor?

• 1/25

• 2/5

• 1/5

• 1/20

Tags

CCSS.HSS.CP.B.9

Sarah, Sammie, Victor, Vicki, Valerie are in a math group. Two students are randomly chosen to be co-leaders. What is the probability that both students' names begin with the letter V?

• 3/5 times 3/5 = 9/25

• 3/5 times 1/2 = 3/10

• 1/5 times 2/5 = 2/15

• 3/5 times 1/4 = 3/20

An automobile dealer decides to select a month for its annual sale.  Find the probability that it will be September or October.

• 1/12
• 1/6
• 1/4
• 5/6

Tags

CCSS.7.SP.C.7A

At a community swimming pool there are 2 managers, 8 lifeguards, 3 concession stand clerks, and 2 maintenance people.  If a person is selected at random, find the probability that the person is either a lifeguard or a manager.

• 2/3
• 8/15
• 2/15
• not enough information

Tags

CCSS.HSS.CP.B.7

What is the probability of spinning green?

• 0
• 1/4
• 1/2
• 3/4

Tags

CCSS.7.SP.C.7B

What is the probability of spinning an even number?

• 16 2/3%

• 33 1/3%

• 50%

• 75%

Tags

CCSS.7.SP.C.7A