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Probability Calculator
What this does
Computes the probability of single and combined events: A and B (independent), A or B, at least one success in n tries, and the complement.
When to use it
- Games — the chance of rolling at least one six in four throws is 1 − (5/6)⁴ ≈ 51.8%.
- Quality checks — the chance a batch passes if each item passes 98% of the time.
Good to know
The "and" rule (multiply) only holds when events are independent. Drawing cards without replacement is not independent.
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