Mutual exclusion

Only one unique can drop per reward slot. The model computes union probability: P(any unique) = 1 − Π(1 − p_i).

Back to Glossary

Usage example

Barrows uniques share one slot; the calculator uses a mutual-exclusion model for accurate ‘any unique’ odds.

Notes & caveats

Independent rolls vs. mutually exclusive tables produce different cumulative curves—choose the one matching the activity.

See also

Back to glossary index