Flip three coins simultaneously and see all results at once. Tracks all 8 possible outcomes — from HHH to TTT — across your session so you can watch the probabilities converge in real time.
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Three coins produce 2³ = 8 equally likely outcomes: HHH, HHT, HTH, THH, HTT, THT, TTH, and TTT. Each has exactly a 12.5% probability. This makes three-coin flips the first scenario where listing all outcomes by hand is manageable but non-trivial — the perfect step up from two-coin probability problems. The session tally in this tool tracks all 8 outcomes so you can watch each converge toward 12.5% over many trials.
While each individual outcome is equally likely at 12.5%, grouping by number of heads reveals an important pattern: getting exactly 0 heads (TTT) = 12.5%, exactly 1 head (HTT, THT, TTH) = 37.5%, exactly 2 heads (HHT, HTH, THH) = 37.5%, exactly 3 heads (HHH) = 12.5%. The row 1-3-3-1 from Pascal's Triangle gives the number of ways to get each count. The "balanced" outcomes — 1 or 2 heads — account for 75% of all flips combined, while the extremes (all-same) occur only 25% of the time total.
Three-coin flips are a staple of probability curricula for introducing sample spaces with 8 outcomes, Pascal's Triangle, and binomial distributions. For games, three coins provide an eight-way random selector, a "majority wins" mechanic (2+ heads vs. 2+ tails for a binary choice), or a graduated luck roll where HHH is the jackpot outcome. The session tally makes probability experiments instant without any dice or spreadsheet setup.