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A probability calculator computes the likelihood of events occurring given the number of favorable outcomes and total possible outcomes. It handles single events, independent events, and complementary probabilities (the chance something does not happen).
Probability is foundational to statistics, risk assessment, games, and machine learning. Expressing probabilities as fractions, decimals, and percentages helps communicate results in different contexts.
Computing probability by hand is simple for single events but becomes cumbersome for compound events involving and/or logic. ToolPop handles both cases and converts among all three formats — fraction, decimal, and percentage — in one step.