Permutations & Combinations Calculator
Calculate permutations nPr and combinations nCr for integer selections.
Calculate permutations nPr and combinations nCr for integer selections.
Move between algebra, geometry, combinatorics, probability, statistics, powers and roots while studying related mathematical concepts.
Solve equations in the form ax + b = c and verify the solution.
Open calculatorCalculate area, perimeter and angles of a triangle from three side lengths.
Open calculatorCalculate permutations nPr and combinations nCr for integer selections.
Calculate intersection, union and complement probabilities for two independent events.
Open calculatorCalculate how many standard deviations a value lies from the mean.
Open calculatorCalculate powers and integer-degree roots, including odd roots of negative values.
Open calculatorPermutations & Combinations Calculator is a study tool for working through the underlying mathematical relationship with validated numerical inputs.
Enter the required values. The calculator validates the inputs and applies the mathematical rule nPr = n! ÷ (n−r)!; nCr = n! ÷ (r!(n−r)!).
Variables: n = Total items (n); r = Selected items (r).
Example: 10P3 = 720; 10C3 = 120.
It is intended for checking exercises, exploring numerical examples, and understanding how changing the inputs changes the result.
Yes when the mathematical definition permits decimals. Inputs that violate the calculator's mathematical domain are rejected.
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