Math Problem Statement

Find the number of elements in each of the following sets based on a Venn diagram: U, A', A ∩ B, A ∩ B', A ∪ B, A' ∩ B'.

Solution

Let's analyze the Venn diagram and answer the given questions based on the sets AA and BB.

Step 1: Understanding the Diagram

The Venn diagram has the following regions with the number of elements:

  • In set AA only (not in BB): 58
  • In both sets AA and BB: 17
  • In set BB only (not in AA): 69
  • Outside both sets AA and BB (in the universal set UU): 76

Step 2: Calculating the Required Values

  1. Total number of elements in UU: U=58+17+69+76=220|U| = 58 + 17 + 69 + 76 = 220

  2. Number of elements in AA' (complement of AA): Elements not in AA include those only in BB and those outside both sets. A=69+76=145|A'| = 69 + 76 = 145

  3. Number of elements in ABA \cap B (intersection of AA and BB): AB=17|A \cap B| = 17

  4. Number of elements in ABA \cap B' (elements in AA but not in BB): AB=58|A \cap B'| = 58

  5. Number of elements in ABA \cup B (union of AA and BB): AB=58+17+69=144|A \cup B| = 58 + 17 + 69 = 144

  6. Number of elements in ABA' \cap B' (neither in AA nor in BB): AB=76|A' \cap B'| = 76

Summary of Results:

  • U=220|U| = 220
  • A=145|A'| = 145
  • AB=17|A \cap B| = 17
  • AB=58|A \cap B'| = 58
  • AB=144|A \cup B| = 144
  • AB=76|A' \cap B'| = 76

Would you like a detailed explanation of any of these calculations, or do you have any specific questions?

Here are some related questions for further exploration:

  1. How would the results change if another element was added to ABA \cap B?
  2. What is the probability of randomly selecting an element from UU that is only in AA?
  3. How do you calculate the symmetric difference between sets AA and BB?
  4. What would be the result if an element is added to only set BB?
  5. How can Venn diagrams be used to solve problems involving three sets?

Tip: When working with Venn diagrams, always double-check to make sure that the counts in all the regions add up to the total in the universal set.

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Math Problem Analysis

Mathematical Concepts

Set Theory
Venn Diagrams
Union and Intersection
Complement of Sets

Formulas

|U| = Total elements in universal set U
|A'| = Elements in the complement of A (not in A)
|A ∩ B| = Elements in both A and B (intersection of A and B)
|A ∩ B'| = Elements in A but not in B
|A ∪ B| = Elements in A or B (union of A and B)
|A' ∩ B'| = Elements neither in A nor B

Theorems

Set Union Formula
Set Intersection Formula
Complementary Set Rules

Suitable Grade Level

High School (Grades 9-12)