Cards, Dice and Boards

Collectible and Deck Building Games

Deck odds, draws and card pool math.

Hypergeometric Distribution for Deck Builders

A practical explanation of the hypergeometric formula for drawing without replacement, with step-by-step card examples and a comparison against the binomial shortcut.

5 min read

Mulligans and the Math of Opening Hands

How to judge whether to keep or redraw a starting hand using conditional probability, with worked examples for a 40-card deck and the limits of any simple rule.

5 min read

Pack Opening Odds and Rarity Tiers

How published rarity rates translate into what you can expect from booster packs, with worked examples for any-rare and specific-card chances and why averages mislead.

5 min read

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