An-old-unsolved-question-1132-let-S-1-2-3-4-5-if-A-B-C-is-such-that-A-B-C-A-B-A-C-how-many-ways-can-be-choose-A-B-and-C-

Question Number 163939 by Rasheed.Sindhi last updated on 12/Jan/22

You can't use 'macro parameter character #' in math mode

let S = {1, 2, 3, 4, 5}, if A, B, C is such that

A \cap B \cap C = \emptyset

A \cap B \neq \emptyset

A \cap C \neq \emptyset

how many ways can be choose A, B and

C