Rare card
Inclusion–exclusion principle
- Value
- 50 W
- Attack
- 272
- Defence
- 217
- Players
- 0
In combinatorics, the inclusion–exclusion principle (commonly referred to as PIE) is a counting technique which generalizes the familiar method of obtaining the number of elements in the union of two finite sets; symbolically expressed as | A ∪ B | = | A | + | B | − | A ∩ B | {\displaystyle |A\cup…
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