Tag: inclusion-exclusion
Interview Questions
- Probability exactly one person gets their own hat
- Count the derangements of five items
- Chance that at least one card matches between two decks
- Probability nobody gets their own hat
- A number divisible by 2, 3, or 5
- Exactly one friend gets their own gift back
- Probability of drawing a face card or a spade
- Probability a die shows even or greater than three
- What fraction of the office likes tea or coffee?
- Probability a number from 1 to 30 is divisible by 2, 3, or 5
- Probability of drawing a king or a heart
- No child left without a toy
- Seating three couples with no pair together
- Does everyone like at least one of the three foods?
- The largest gap between points on a circle