When two events (call them A and B) are Mutually Exclusive it is impossible for them to happen together: P(A and B) = 0. The probability of A and B together equals 0 (impossible).
Generation Z. Generation Z (also known as The Founders, Post-Millennials, the iGeneration, Plurals or the Homeland Generation) is the demographic cohort after the Millennials.
Difference between Generation X and Generation Y. Generation X and generation Y are two categories of people that are defined according to the idea that different generations can be separated from one another according to when they were born and to the cultural influences that have shaped them.