This question is about how to calculate probability.

What is the formula for probability?

By Zippia Team - Mar. 27, 2023

The formula for probability is the number of ways the desired event can occur divided by the total number of outcomes.

For example, if you're trying to calculate the probability of pulling a blue marble out of a bag of 20 marbles, and 4 of those 20 marbles are blue, you'd divide 4 (the number of blue marbles, aka your desired outcome) by 20 (the total number of outcomes).

This gets you a probability of 0.2, or 20%.

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