Probability of Simple Events

These are activities such as tossing or flipping a coin without looking which could be repeated over and over again and which have well-defined results.

• Experiment

• Event

• Sample Space

• Outcome

This is the set of all outcomes in an experiment.

• Experiment

• Outcome

• Sample Space

• Event

These are one or more outcomes in an experiment. It is a subset of the sample space.

• Experiment

• Event

• Outcome

• Sample Space

These are the results of an experiment or an element of a sample space.

• Experiment

• Event

• Sample Space

• Outcome

A balanced die is rolled. What is the probability of rolling a number that is not 3?

• 0/6 or 0

• 5/6

• 1/6

• 6/6 or 1

Tags

CCSS.7.SP.C.5

In a 500-ticket draw for an educational prize, Ana’s name was written on 41 tickets. What is the probability that she would win?

• 0.082

• 0.41

• 0.122

• 0.82

Tags

CCSS.7.SP.C.7B

Which of the following statement is TRUE?

• Answering a true/false-type question has one possible outcome.

• Flipping a coin thrice has 3 possible outcomes.

• The probability of getting a head when a coin is tossed can be expressed as 1/2, 0.5, or 50%.

• The probability of rolling 7 in a die is 1/7.

Tags

CCSS.7.SP.C.5

A bag contains 10 red balls and 7 blue balls. A ball is drawn at random. The probability that ball drawn is not red is

• 7

• 10/17

• 7/17

• 3/17

Tags

CCSS.7.SP.C.5

Arlene Joy got coins from her pocket which accidentally rolled on the floor. If there were 8 possible outcomes, how many coins fell on the floor?

• 3

• 8

• 4

• 16

Consider a Spinner with 12 equal parts numbered from 1 to 12. Assume that the arrow will only point to one sector nor to boundary lines. What is the probability of landing an ODD number?

• 1/3

• 1/2

• 1/4

• 1/6

Tags

CCSS.7.SP.C.7A