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Combinatorics Almanac
Classic bets to vote on before calculating: the Chevalier de Méré, Galileo’s three-dice problem, the birthday problem, the lottery against 24 heads, Newton and Pepys, and Pascal and Fermat’s problem of points.
27 slides · 4 animations
For teachers only
Chance lab
When outcomes cannot be counted, they are measured. The alarm clock, the cut ribbon, the square of pairs (the meeting, the cinema), the stick broken in three, points on a circle, Sylvester’s problem and Buffon’s needle.
35 slides · 10 animations
For teachers only
Chance lab
Predict before calculating. The two trains and the waiting time, Simpson, Bernstein’s independence, Secret Santa, Bertrand, St Petersburg, the two envelopes, the hospital, Linda, Efron’s dice and the surprise exam.
31 slides · 6 animations
For teachers only
Chance lab
Conditioning means counting again among the cases that remain. Tables and trees, the taxi and the virus test (the base rate), Bertrand’s boxes, Monty Hall, the three prisoners, the boy born on a Tuesday and the hats.
31 slides · 4 animations
For teachers only
Chance lab
The drunkard’s walk on the line. Where it is after n steps, the return to the origin (Pólya), gambler’s ruin, waiting for coin patterns, the ant on the cube, misleading investments and the arcsine law.
29 slides · 6 animations