COMBINATIONS AND PERMUTATIONS

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Permutations: P(n,r) = n!/(n-r)! eg. P(5,2)=20
Combinations: C(n,r) = P(n.r)/r! eg. C(5.2)=10

Note: big numbers shown approximate/rounded

EDUCATIONAL RESOURCES
CALCULATORS
EQUATION SOLVERS
TUTORIALS AND PRACTICE TESTS