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If set A = {1, 2, 3, 4} and set B = {3, 4, 5, 6}, what is the difference A - B?

Practice Questions

Q1
If set A = {1, 2, 3, 4} and set B = {3, 4, 5, 6}, what is the difference A - B?
  1. {1, 2}
  2. {3, 4}
  3. {5, 6}
  4. {}

Questions & Step-by-Step Solutions

If set A = {1, 2, 3, 4} and set B = {3, 4, 5, 6}, what is the difference A - B?
  • Step 1: Identify the elements in set A, which are {1, 2, 3, 4}.
  • Step 2: Identify the elements in set B, which are {3, 4, 5, 6}.
  • Step 3: Look for elements that are in set A but not in set B.
  • Step 4: Check each element in set A: 1 is not in B, 2 is not in B, 3 is in B, and 4 is in B.
  • Step 5: Collect the elements from set A that are not found in set B, which are {1, 2}.
  • Step 6: Conclude that the difference A - B is {1, 2}.
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