Математика
Мгновенно, конфиденциально и бесплатно
Калькулятор вероятности.
Рассчитайте вероятность, сочетания, перестановки и шансы
Расчёт на устройствеБез регистрации
01
Введите значения
Результаты обновляются во время ввода.
02 / ОТВЕТ
Вопросы и ответы
В чём разница между сочетаниями и перестановками?
Сочетания подсчитывают выборки, где порядок не важен, а перестановки — размещения, где порядок имеет значение.
How to Use the Probability Calculator
Calculate the probability of single and combined events.
- Enter the number of favorable outcomes.
- Enter the total number of possible outcomes.
- See the probability as a fraction, decimal, and percentage.
Probability Formulas
Single Event
P(A) = favorable / total
Outcomes you want divided by all equally likely outcomes.
Example:
Input: rolling a 6
Calculation: 1 / 6
Result: ≈ 16.7%
Independent Events (AND)
P(A and B) = P(A) × P(B)
Multiply probabilities of independent events.
Example:
Input: two heads
Calculation: 0.5 × 0.5
Result: 25%
Real-World Use Cases
Games & Odds
Compute dice, card, and lottery odds.
Risk Estimation
Combine event probabilities.
Tips
Tips
- Probabilities range from 0 (impossible) to 1 (certain).
- Add for OR (mutually exclusive), multiply for AND (independent).
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