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What is the union of the sets I = {1, 2} and J = {2, 3}?

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Question: What is the union of the sets I = {1, 2} and J = {2, 3}?

Options:

  1. {1, 2, 3}
  2. {1, 2}
  3. {2, 3}
  4. {1, 2, 2, 3}

Correct Answer: {1, 2, 3}

Solution: 

The union of two sets includes all unique elements from both sets. Thus, I ∪ J = {1, 2, 3}.

What is the union of the sets I = {1, 2} and J = {2, 3}?

Practice Questions

Q1
What is the union of the sets I = {1, 2} and J = {2, 3}?
  1. {1, 2, 3}
  2. {1, 2}
  3. {2, 3}
  4. {1, 2, 2, 3}

Questions & Step-by-Step Solutions

What is the union of the sets I = {1, 2} and J = {2, 3}?
  • Step 1: Identify the elements in set I, which are {1, 2}.
  • Step 2: Identify the elements in set J, which are {2, 3}.
  • Step 3: Combine all the elements from both sets I and J.
  • Step 4: Remove any duplicate elements to ensure all elements are unique.
  • Step 5: Write down the final set of unique elements.
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