Lectures - 1.1 Review of Sets and Set Operations

Let X = {a, b, c}. Which set is a subset of X?

• A. {a, b, c, d}
• B. {Kilroys, Nicks, Brothers}
• C. {a, b}

Let A = {a, b, c}, B = {c, d, e}. Which of the following is A U B?

• A. {a, b, c, d, e, f}
• B. {a, b, c, d, e}
• C. {a, b, c, c, d, e}

Let U = {1, 2, 3, 4, 5}, A = {2, 3}. Which of the following is A’?

• A. {1, 4, 5}
• B. {2, 3}
• C. {1, 2, 3}