Monte Carlo – Repeated Dice Problem from 404 podcast

Last week a podcast I listen to, the 404, discussed a math problem where you roll six 20-sided die and count how often you get a situation where at least one dice matches another dice.  They discussed the math a little and came to the conclusion that it happens far more than you’d think.  I thought it’d make a good monte carlo programming exercise so I’ve done just that.  Below, you’ll find my C code (though it’s not great) and results for 2-20 dice.

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