Probability (Simple & Compound)

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, where 0 means the event will not happen and 1 means it will definitely happen.

Front

What is the probability of an event that is certain to happen?

Back

1 (or 100%)

Front

What is the probability of an event that is impossible?

Back

0 (or 0%)

Front

If the probability of an event is 30%, what is the probability that it will NOT happen?

Back

70% (100% - 30%)

Front

What is a simple probability?

Back

Simple probability refers to the likelihood of a single event occurring.

Front

What is a compound probability?

Back

Compound probability refers to the likelihood of two or more events occurring together.

Front

What is the probability of rolling a standard dice and getting a number greater than 4?

Back

1/3 (only 5 and 6 are greater than 4).

Front

If you have a bag with 4 red, 2 blue, and 3 green marbles, what is the probability of drawing a red marble?

Back

4/9 (4 red out of 9 total marbles).

Front

What is the probability of flipping a coin and getting heads?

Back

1/2 (there are two possible outcomes: heads or tails).

Front

What is the probability of drawing a blue marble from a bag with 4 red, 2 blue, and 3 green marbles?

Back

2/9 (2 blue out of 9 total marbles).