Probability Calculator
Calculate the probability of an event occurring. Enter the number of favorable outcomes and total possible outcomes.
Probability
0.300000
Formule
## How to Calculate Probability ### Formula **P(event) = Favorable Outcomes / Total Outcomes** Probability ranges from 0 (impossible) to 1 (certain). ### Odds - **Odds in favor** = favorable / unfavorable - **Odds against** = unfavorable / favorable
Exemple Résolu
A bag has 10 marbles: 3 red, 7 blue. What is the probability of drawing a red marble?
- 01P(red) = 3 / 10 = 0.3
- 02As a percentage: 30%
- 03Odds in favor: 3 / 7 ≈ 0.4286
- 04Odds against: 7 / 3 ≈ 2.3333
Questions Fréquentes
What is probability?
Probability is a measure of how likely an event is to occur. It is calculated as the number of favorable outcomes divided by the total number of possible outcomes.
What is the difference between probability and odds?
Probability is favorable/total (ranges 0 to 1). Odds are favorable/unfavorable (can be any positive number). Probability of 0.75 means odds of 3:1 in favor.
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