// multi-utility computation suite · offline · instant · precise
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math.permutations-combinations Calculator
Calculates permutations P(n,r) and combinations C(n,r) for both with- and without-repetition cases, with factorials shown. This is the core calculation behind probability questions, lottery odds, and experimental design sample-size planning.
Inputs
N
Reference formula or conversion factor shown for context.
R
Reference formula or conversion factor shown for context.
Results
permutations P(n,r)
The value at the specified point or condition.
combinations C(n,r)
The value at the specified point or condition.
n
Sample size or count used in the calculation.
r
Reference formula or conversion factor shown for context.