D100 Dice Roller Calculator
Calculate d100 dice roller — combinations and probability.
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Combinations C(n,r)
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Permutations P(n,r)
Recent Calculations
What Is D100 Dice Roller?
D100 Dice Roller calculates the number of ways to select or arrange items.
Formula
C(n,r) = n! / (r!(n-r)!), P(n,r) = n! / (n-r)!Frequently Asked Questions
What's the difference between combinations and permutations?
Combinations: order doesn't matter (choosing a team). Permutations: order matters (arranging a lineup).