What does B' represent?

Answer

In mathematical notation, B' typically denotes the complement of set B. This means it includes all elements that are not in the set B, within a specified universal set. For example, if the universal set U contains the elements {1, 2, 3, 4, 5} and set B contains {2, 3}, then B' would include {1, 4, 5}. The complement operation is fundamental in set theory, enabling the exploration of relationships between sets.