Practice Probability in Math
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
Probability is a number between 0 and 1 (inclusive) that measures how likely an event is to occur, where 0 means impossible and 1 means certain.
How confident you should be that something will happen. 0 = impossible, 1 = certain.
Showing a random 20 of 50 problems.
Example 1
easyA fair die is rolled. What is the probability of rolling an odd number?
Example 2
mediumTwo coins are flipped. P(two heads)?
Example 3
mediumA jar has red, green, blue. P(red or green)?
Example 4
mediumA card is drawn from a deck. P(red queen)?
Example 5
hardTwo dice are rolled. P(product is odd)?
Example 6
mediumTwo fair dice are rolled. P(both show )?
Example 7
mediumTwo fair dice are rolled. P(sum )?
Example 8
easyIn a class of , are girls. A student is picked at random. P(girl)?
Example 9
easyA fair die is rolled. What is the probability of rolling a ?
Example 10
challengeThe gambler's fallacy: after heads in a row, is tails 'more likely' on the next flip? Explain.
Example 11
easyWhat is the probability of an impossible event?
Example 12
mediumIf P(rain) = , what are the odds in favor of rain?
Example 13
mediumA coin is flipped 3 times. P(exactly 2 heads)?
Example 14
mediumA die is rolled twice. P(at least one )?
Example 15
easyA coin is flipped. What is the probability of heads?
Example 16
easyA bag has red, blue, and green marbles. P(green)?
Example 17
easyThe probability of an event is . P(complement)?
Example 18
mediumA card is drawn from a standard deck. P(face card: J/Q/K)?
Example 19
easyP(not rolling a 6) on a fair die?
Example 20
challengeA bag has red and blue. Draw without replacement. P(one of each color)?