18
Part of 2020 BMT Fall
Problems(2)
2020 BMT Team 18
Source:
1/9/2022
Let be the answer to question , and let . Leanne flips a fair coin times. Let be the number of times that within a series of three consecutive flips, there were exactly two heads or two tails. What is the expected value of ?
combinatorics
2020 BMT Individual 18
Source:
1/9/2022
Let and be integers between and , inclusive. For the system of modular congruences , find the sum of all distinct possible values of
number theory