Sets

You may want to watch two videos about Sets and Intersection of Sets, Union of Sets and/or read Section 4.1 of the book Mathematics for Computer Science by Eric Lehman, F Thomson Leighton, Albert R Meyer. .

Self-Testing Quizzes

1. Let \(A = \{2, 3, 4\}, B = \{4, 7\}\). Which of the following is Incorrect?

\(A \cap B = \{4\} \) \( A\cup B = \{2,3,4,7\} \) \( \mid A \mid = 3 \) \(A - B = \{2, 3, 7\}\)

2. Let \( A = \{a, b, c\}, B = \emptyset\). Which of the following is Incorrect?

\(\{a, b\}\sqsubseteq A\) \(B\sqsubseteq A\) \( d \notin A \) \( \mid A \cup B \mid = 4\)

3. Given \( A \) = {1, 3, 6, 8, 9, 12, 15} and \( B \) = {6, 9, 12}, which is TRUE??

\( B \) is the complement of \( A \) \(A \cap B = \emptyset \) \( A \) and \( B \) are disjoint sets. \(B \sqsubset A \)

4. What is the complement of \( B \) union \(C\) ?

complement_set_b_and_c

{20, 30}. {10, 50, 65} {10, 50, 65, 60, 70, 75, 85, 90} {20, 30, 60, 70, 75, 85, 90}

Your grade is: __