Roger is playing a board game and rolls two number cubes. let a = {the sum of the number cubes is even}, and let b = {the sum of the number cubes is divisible by 5}. list the outcomes in a ∪ b.

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected