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, or as a percentage.

Front

What is Theoretical Probability?

Back

Theoretical Probability is the probability of an event happening based on the possible outcomes in a perfect scenario.

Front

How do you calculate the probability of an event?

Back

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

Front

What is an example of a simple probability?

Back

If you flip a coin, the probability of getting heads is 1/2 or 50%.

Front

What is the probability of landing on red if there are 3 red, 2 green, and 5 blue outcomes?

Back

Probability of red = 3/(3+2+5) = 3/10 = 30%.

Front

If a spinner has 4 equal sections (1 red, 1 green, 2 blue), what is the probability of landing on green?

Back

Probability of green = 1/4 = 25%.

Front

What is the probability of drawing an even numbered card from a standard deck?

Back

There are 20 even numbered cards (2, 4, 6, 8, 10, J, Q) out of 52, so probability = 20/52 = 5/13.

Front

What is the probability of rolling a 3 on a standard die?

Back

Probability of rolling a 3 = 1/6.

Front

If you have a bag with 3 red, 2 green, and 5 yellow marbles, what is the probability of picking a yellow marble?

Back

Probability of yellow = 5/(3+2+5) = 5/10 = 50%.

Front

What is the probability of not rolling a 6 on a die?

Back

Probability of not rolling a 6 = 5/6.