Math Utility

Probability Calculator

Work out basic probability, count combinations and permutations, and calculate exact binomial outcomes from a simple set of inputs.

Basic probability

Favorable outcomesTotal outcomes

Probability

30%

Complement

70%

nCr

120

nPr

720

Trials (n)Successes (k)Success probability %

P(X = k)

20.5078%

Basic probability is favorable outcomes divided by total outcomes, assuming all outcomes are equally likely.

Combinations count selections where order does not matter, while permutations count arrangements where order does matter.

It calculates the probability of getting exactly k successes in n independent trials when each trial has the same success probability.

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