Math Problem Statement

Укажите результат операции A ∪ B \ C, учитывая, что множества U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, A = {2, 4, 6, 8}, B = {2, 3, 4, 5}, C = {1, 3, 5, 7, 9}.

Solution

The task is to compute the result of the operation ABCA \cup B \setminus C, considering that the elements are part of the universal set U={0,1,2,3,4,5,6,7,8,9}U = \{0, 1, 2, 3, 4, 5, 6, 7, 8, 9\}.

Given Sets:

  • U={0,1,2,3,4,5,6,7,8,9}U = \{0, 1, 2, 3, 4, 5, 6, 7, 8, 9\}
  • A={2,4,6,8}A = \{2, 4, 6, 8\}
  • B={2,3,4,5}B = \{2, 3, 4, 5\}
  • C={1,3,5,7,9}C = \{1, 3, 5, 7, 9\}

Steps to Solve:

  1. Union of ABA \cup B: Combine all unique elements of AA and BB: AB={2,4,6,8}{2,3,4,5}={2,3,4,5,6,8}.A \cup B = \{2, 4, 6, 8\} \cup \{2, 3, 4, 5\} = \{2, 3, 4, 5, 6, 8\}.

  2. Subtraction (ABCA \cup B \setminus C): Remove all elements of CC from ABA \cup B: ABC={2,3,4,5,6,8}{1,3,5,7,9}={2,4,6,8}.A \cup B \setminus C = \{2, 3, 4, 5, 6, 8\} \setminus \{1, 3, 5, 7, 9\} = \{2, 4, 6, 8\}.

  3. Restrict to UU: The result must only include elements from UU, but since {2,4,6,8}U\{2, 4, 6, 8\} \subseteq U, this step does not affect the answer.

Final Answer:

The result of ABCA \cup B \setminus C is: {2,4,6,8}\{2, 4, 6, 8\}

When formatted as the question specifies (numbers in ascending order, without spaces or commas), the answer is: 24682468

Would you like a detailed explanation of any step?

Related Questions:

  1. What is the intersection of ABA \cap B?
  2. How is the subtraction operation in sets defined mathematically?
  3. What is the difference between ABA \setminus B and BAB \setminus A?
  4. How do we handle operations if UU is not a universal set?
  5. How would the result change if C=C = \emptyset?

Tip:

To efficiently compute set operations, first write down each step and simplify before applying constraints like the universal set.

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Math Problem Analysis

Mathematical Concepts

Set Theory
Union of Sets
Set Difference

Formulas

A ∪ B = {x | x ∈ A or x ∈ B}
A \ C = {x | x ∈ A and x ∉ C}

Theorems

Definition of Union and Set Difference

Suitable Grade Level

Grades 8-10