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 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

What is the formula for calculating the probability of an event A?

Back

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

Front

What is the probability of an event not occurring?

Back

P(not A) = 1 - P(A).

Front

If a die is rolled, what is the probability of rolling a 3?

Back

P(rolling a 3) = 1/6.

Front

If there are 3 red balls and 2 blue balls in a bag, what is the probability of picking a blue ball?

Back

P(blue) = 2/5.

Front

What is the probability of landing on a color that is not present in a spinner with red, blue, and yellow?

Back

P(not present color) = 0.

Front

If a coin is flipped, what is the probability of getting heads?

Back

P(heads) = 1/2.

Front

What is the probability of choosing a popsicle at random and getting either a blue or a green?

Back

P(blue or green) = 1/3.