Combinatorics
Factorial, permutations and combinations for whole n and r.
Open a calculatorGCD is Euclid’s algorithm on the absolute values. LCM is |a| / GCD × |b|. Both inputs must be integers. 0 and 0 is refused.
GCD: 6
GCD(12, 18) is 6 and LCM is 36. Fractions are not this page.
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An educational estimate. Not medical, tax or credit advice.