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Probability Concepts

P(A)

Basic Probability

P(A) = n(A)/n(S)

nPr

Permutations

n!/(n-r)!

nCr

Combinations

n!/r!(n-r)!

P(A|B)

Conditional

P(A∩B)/P(B)

Bayes

Theorem

P(A|B)P(B)/P(A)

E(X)

Expected Value

Σx·P(x)

Var(X)

Variance

E(X²)-[E(X)]²

Probability Calculator

Permutations

nPr = 60

Combinations

nCr = 10

Simple Probability

P = 0.3000 (30%)

Probability Playground

확률 놀이터

Coin Flip

H
T
Heads: 0 Tails: 0

Dice Roll

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0

Two Dice Sum

+
= 2
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0
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0
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0
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0
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