Tag: indicators

Interview Questions

• Expected number of distinct birthdays in a room of 30
• Expected number of people who get their own hat back
• Expected number of record highs in a random sequence
• Expected number of HT patterns in 100 coin flips
• Expected number of distinct faces in six rolls
• Expected number of shared-birthday pairs
• Expected number of empty bins
• Expected number of new highs in a random ranking
• Expected number of distinct faces in six die rolls
• Expected number of hat matches
• Expected number and variance of mutual hat swaps
• Mean and variance of the number of record highs
• Mean and variance of the number of empty boxes
• Variance of the number of shared-birthday pairs
• Variance of the number of hat matches