Probability Worksheet

Write the probability of the following in simplest form: A spinner is divided into 8 sections, numbered 1 to 8. What is the probability of landing on the number 7?

• 1/2

• 1/4

• 1/8

• 1/3

Write the probability of the following in simplest form: A spinner is divided into 8 sections, numbered 1 to 8. What is the probability of landing on a number divisible by 3?

• 1/8

• 1/4

• 1/3

• 3/8

Using the probability from the previous question, predict the number of people that would have a dog or rabbit if 175 people were asked.

• 35

• 50

• 75

• 100

Based on the table provided, what is the experimental probability that the next person asked would have a cat (simplest form)?

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In a bag there are 7 blue marbles, 5 red marbles, and 4 white marbles. Once a marble is selected, it is REPLACED. Express each in simplest form. Find P(blue then white)

• 28/256

• 7/64

• 1/4

• 4/16

In a bag there are 7 blue marbles, 5 red marbles, and 4 white marbles. Once a marble is selected, it is REPLACED. Express each in simplest form. Find P(blue then blue)

• 49/256

• 14/256

• 1/4

• 49/16

In a bag there are 7 blue marbles, 5 red marbles, and 4 white marbles. Once a marble is selected, it is REPLACED. Express each in simplest form. Find P(blue then red)

• 5/16

• 7/16

• 35/256

• 49/256

In a bag there are 7 blue marbles, 5 red marbles, and 4 white marbles. Once a marble is selected, it is NOT REPLACED. Express each in simplest form. Find P(blue then red then white)

• 7/240

• 1/48

• 5/336

• 1/56

In a bag there are 7 blue marbles, 5 red marbles, and 4 white marbles. Once a marble is selected, it is NOT REPLACED. Express each in simplest form. Find P(blue then red)

• 5/16

• 7/16

• 35/132

• 7/15

In a bag there are 7 blue marbles, 5 red marbles, and 4 white marbles. Once a marble is selected, it is NOT REPLACED. Express each in simplest form. Find P(red then white)

• 5/33

• 20/99

• 5/44

• 20/77