Calculatrice de Probabilité Gratuite
Calculez la probabilité d'un événement. Résolvez des problèmes de probabilité simple, conditionnelle ou composée.
Probability
0.300000
Probability Pct30.00%
Odds For0.4286
Odds Against2.3333
Formule
How to Calculate Probability
Formula
P(event) = Favorable Outcomes / Total Outcomes
Probability ranges from 0 (impossible) to 1 (certain).
Odds
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.
Apprendre