Tricki

a repository of mathematical know-how

#### A

#### B

#### I

#### K

#### S

#### T

- To compute probabilities of unions and intersections, use the inclusion-exclusion formula
- To compute the probability that exactly k of n events occur, use generalized inclusion-exclusion
- To increase the occurrence of a property in a set, try randomly refining that set in a way that favors the property

#### U

19 weeks 5 daysago40 weeks 3 daysago2 years 11 weeksago2 years 35 weeksago3 years 15 hoursago