Probabiity

Which equation below accurately demonstrates the relationship between the probability of an event and its complement?

• P(Event) - P(Not Event) = 1

• P(Event) x P(Not Event) = 1

• P(Event) + P(Not Event) = 1

• P(Event) / P(Not Event) = 1

Miranda has a number cube labeled with the numbers one through six. What is the probability of rolling a 3 or a 4 on the first roll?

• 1/2

• 1/3

• 2/18

• 1/6

Alex tossed an eight-sided shape with the numbers 1 through 8. What is the probability that Alex will roll a 4?

• 1/8

• 1/4

• 1/3

• 1/2

Felix chooses a game piece from a bag. This table gives the number of game pieces of each color in the bag.

What is the probability that Felix will choose a blue or a green piece?

• 1/12

• 1/4

• 1/6

• 1/3

The probability of selecting a red ball is 1/3. What is the probability of not selecting a red ball?

• 1/3

• 3/3

• 0/3

• 2/3

A number cube labeled 1 through 6 and a spinner with two equal sections, one labeled A and one labeled B, is spun. Which diagram below shows all the possible outcomes of the first spin?

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Miguel is having a new home built for his family. He has the following options to select from for his new home.

1 or 2 story

3 or 4 bedrooms

wood floors or carpet

Which list shows all the possible outcomes that Miguel can select?

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Sam has a bag of marbles. The probability of Sam selecting a tiger eye marble is 2/9. What is the probability of Sam not selecting a tiger eye marble?

• 1/4

• 2/9

• 7/9

• 5/7

Marie is flipping a coin and rolling a number cube at the same time and recording the results. The tree diagram below shows all the possible outcomes.

Which list below shows all the possible outcomes?

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Each spinner below is spun once.

Which of the following lists all the possible outcomes when each spinner is spun once?

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