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Le Monde puzzle [#1127]

A permutation challenge as Le weekly Monde current mathematical puzzle: When considering all games between 20 teams, of which 3 games have not yet been played, wins bring 3 points,...continue reading.

an elegant sampler

Following an X validated question on how to simulate a multinomial with fixed average, W. Huber produced a highly elegant and efficient resolution with the compact R code tabulate(sample.int((k-1)*n, s-n)...continue reading.

Le Monde puzzle [#1120]

A board game as Le weekly Monde current mathematical puzzle: 11 players in a circle and 365 tokens first owned by a single player. Players with at least two tokens...continue reading.

Sudoku game with R

Sudoku is a classical logical game based on combinatorial number replacement puzzle. Objective is to to fill 9×9 matrix with digits so that each column, each row, and each box...continue reading.