Combination Calculator
Compute nCr combinations and nPr permutations with factorial steps shown. Count 5-card poker hands (2,598,960) correctly — free, local, no signup.
How to Use the Combination Calculator
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Frequently Asked Questions
How many 5-card poker hands?
2,598,960 = C(52,5) — order doesn't matter in poker, so combinations apply. Permutations would overcount 120x.
Combinations vs permutations?
Order matters → permutations (P); order irrelevant → combinations (C). Teams and hands use C; passwords and rankings use P.
Large numbers?
Exact integers into the millions; beyond that scientific notation with full precision preserved.
Do lottery numbers upload?
No — math runs locally in your browser. Numbers never leave your device.
Related Calculator Tools
Permutation Calculator
Calculate the number of ways to arrange k items from n items (nPr). Shows the step-by-step permutation calculation. Numbers never leave your device — every calculation runs locally in your browser.
Factorial Calculator
Calculate the factorial of any number (n!). Handles large numbers and shows the full multiplication sequence. Numbers never leave your device — every calculation runs locally in your browser.
Last updated October 2026