Finding the probability repeats in finite sequences
September 23rd, 2022
1. What is the probability that out of 3 people, 2 were born in the same month.
2. What is the probability that a seven digit phone number has 1 or more repeats.
3. What is the probability that given 5 letters selected randomly from the alphabet, none is repeated?
4. What is the probability 2 of more randomly selected senators have the same birthday (100 senators).