Math Problem Statement

Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, A = {2, 3, 4, 6}, and B = {2, 3, 5}. Find the set A ∩ B.

Solution

We are given three sets in the problem:

  • U={1,2,3,4,5,6,7,8,9,10}U = \{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 \} (the universal set),
  • A={2,3,4,6}A = \{ 2, 3, 4, 6 \},
  • B={2,3,5}B = \{ 2, 3, 5 \}.

The task is to find ABA \cap B, which is the intersection of sets AA and BB. The intersection contains the elements that are common to both sets AA and BB.

Steps:

  • A={2,3,4,6}A = \{ 2, 3, 4, 6 \},
  • B={2,3,5}B = \{ 2, 3, 5 \}.

The common elements between AA and BB are 22 and 33.

Thus, AB={2,3}A \cap B = \{ 2, 3 \}.

Answer:

AB={2,3}A \cap B = \{ 2, 3 \}

Would you like further details or any explanations on this?

Here are 5 questions related to set theory for further exploration:

  1. What is the union of sets AA and BB?
  2. What elements are in AA but not in BB (i.e., ABA - B)?
  3. What is the complement of set AA with respect to the universal set UU?
  4. How would you represent the union of three sets, say AA, BB, and another set CC?
  5. What is the difference between a set intersection and a set union?

Tip: The intersection of two sets always includes elements that both sets have in common. If no elements are shared, the intersection is the empty set \emptyset.

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Math Problem Analysis

Mathematical Concepts

Set Theory
Set Intersection

Formulas

A ∩ B = {x | x ∈ A and x ∈ B}

Theorems

Intersection of Sets Theorem

Suitable Grade Level

Grades 6-8