Hypergeometric Distribution Calculator

The total number of items in the population you draw from — e.g. 52 cards in a deck.

How many items in the population count as successes — e.g. 4 aces in the deck. The remaining N − K items are failures.

How many items you draw without putting any back. Each draw changes the remaining mix — that is what distinguishes this from the binomial distribution.

The number of successes among your draws that you want the probability for — e.g. exactly 1 ace in a 5-card hand.