Probability Test Review

Front

What is probability?

Back

Probability is a measure of how likely an event is to occur, expressed as a number between 0 and 1.

Front

What does a probability of 0 mean?

Back

A probability of 0 means that the event cannot happen.

Front

What does a probability of 1 mean?

Back

A probability of 1 means that the event is certain to happen.

Front

What is the probability of rolling a 7 on a single die?

Back

0, because a standard die has numbers 1 to 6.

Front

What is the formula for calculating probability?

Back

Probability = (Number of favorable outcomes) / (Total number of possible outcomes).

Front

If a spinner has 5 equal sections, what is the probability of landing on one specific section?

Back

1/5, because there is 1 favorable outcome out of 5 possible outcomes.

Front

What is the probability of spinning red if there are 5 red sections out of 12 total sections?

Back

5/12, because there are 5 favorable outcomes out of 12 possible outcomes.

Front

What is the probability of spinning green if there are 3 green sections out of 12 total sections?

Back

3/12 or 1/4, because there are 3 favorable outcomes out of 12 possible outcomes.

Front

What is the probability of rolling a number less than 3 on a single die?

Back

1/3, because the favorable outcomes are 1 and 2.

Front

What is the probability of rolling two dice and getting a total of 4?

Back

3/36 or 1/12, because the combinations are (1,3), (2,2), and (3,1).