Math Problem Statement

Practice Exercises: Solve the set theory problems using sets U, A, B, and C.

Solution

Let's work through each of the set operations one by one using the universal set U={1,2,3,4,5,6,7}U = \{1, 2, 3, 4, 5, 6, 7\}, and the sets:

  • A={1,3,5,7}A = \{1, 3, 5, 7\}
  • B={1,2,3}B = \{1, 2, 3\}
  • C={2,3,4,5,6}C = \{2, 3, 4, 5, 6\}

1. A(BC)A \cup (B \cap C)

  • First, find BCB \cap C, which is the intersection of sets BB and CC. BC={2,3}B \cap C = \{2, 3\}
  • Now, find A(BC)A \cup (B \cap C), which is the union of sets AA and {2,3}\{2, 3\}. A(BC)={1,2,3,5,7}A \cup (B \cap C) = \{1, 2, 3, 5, 7\}

2. A(BC)A \cap (B \cup C)

  • First, find BCB \cup C, which is the union of sets BB and CC. BC={1,2,3,4,5,6}B \cup C = \{1, 2, 3, 4, 5, 6\}
  • Now, find A(BC)A \cap (B \cup C), which is the intersection of sets AA and {1,2,3,4,5,6}\{1, 2, 3, 4, 5, 6\}. A(BC)={1,3,5}A \cap (B \cup C) = \{1, 3, 5\}

3. (AB)(AC)(A \cup B) \cap (A \cup C)

  • First, find ABA \cup B, which is the union of sets AA and BB. AB={1,2,3,5,7}A \cup B = \{1, 2, 3, 5, 7\}
  • Then, find ACA \cup C, which is the union of sets AA and CC. AC={1,2,3,4,5,6,7}A \cup C = \{1, 2, 3, 4, 5, 6, 7\}
  • Now, find the intersection of these two sets. (AB)(AC)={1,2,3,5,7}(A \cup B) \cap (A \cup C) = \{1, 2, 3, 5, 7\}

4. (AB)(AC)(A \cap B) \cup (A \cap C)

  • First, find ABA \cap B, which is the intersection of sets AA and BB. AB={1,3}A \cap B = \{1, 3\}
  • Then, find ACA \cap C, which is the intersection of sets AA and CC. AC={3,5}A \cap C = \{3, 5\}
  • Now, find the union of these two sets. (AB)(AC)={1,3,5}(A \cap B) \cup (A \cap C) = \{1, 3, 5\}

5. A(BC)A' \cap (B \cup C)

  • First, find AA', which is the complement of set AA with respect to UU. A=UA={2,4,6}A' = U \setminus A = \{2, 4, 6\}
  • Then, find BCB \cup C. BC={1,2,3,4,5,6}B \cup C = \{1, 2, 3, 4, 5, 6\}
  • Now, find the intersection of these two sets. A(BC)={2,4,6}A' \cap (B \cup C) = \{2, 4, 6\}

Would you like me to continue solving the rest of the exercises or explain any of the steps in more detail?

Here are 5 related questions for further practice:

  1. What is (AB)C(A' \cup B') \cap C?
  2. Can you find the complement of (BC)(B \cap C) with respect to UU?
  3. What is the difference between A(BC)A \cap (B \cup C) and (AB)(AC)(A \cap B) \cup (A \cap C)?
  4. How do you compute ABA' \cap B'?
  5. What does (AB)(A \cup B)' represent in terms of set operations?

Tip: Always simplify the inner parentheses first in complex set operations, especially for union and intersection.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Set Theory
Union
Intersection
Complement

Formulas

A ∪ B (Union of sets A and B)
A ∩ B (Intersection of sets A and B)
A' (Complement of set A)
A ∪ (B ∩ C) (Union and intersection combined)

Theorems

De Morgan's Laws
Laws of Union and Intersection

Suitable Grade Level

Grades 9-12