basic probability

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

Back

0 (A standard die has numbers 1 to 6, so rolling a 7 is impossible.)

Front

How do you calculate the probability of an event?

Back

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

Front

In a bag with 5 quarters, 2 dimes, and 4 pennies, what is the probability of picking a quarter?

Back

5/11

Front

What is the probability of NOT spinning a green on a spinner with 3 green and 9 other colors?

Back

3/4 (There are 12 total sections, 9 are not green.)

Front

What is the probability of choosing a letter other than 'A' from the word 'ALGEBRA'?

Back

5/7 (There are 5 letters that are not 'A' out of 7 total letters.)

Front

If you roll a die once, what is the probability of it landing on a 2?

Back

1 out of 6

Front

What does it mean if an event has a probability of 0?

Back

It means the event is impossible and will not occur.

Front

What does it mean if an event has a probability of 1?

Back

It means the event is certain and will definitely occur.

Front

If a bag contains 10 marbles (3 red, 4 blue, 3 green), what is the probability of picking a blue marble?

Back

4/10 or 2/5