Match the following.

Given A = {1, 2, 3, 4, 5} B = {2, 4, 6} C = {1, 3, 5}

1. A ∪ B

null, or empty set

2. A ∪ C

{1, 2, 3, 4, 5, 6}

3. A ∩ B

{2, 4}

4. A ∩ C

{1, 3, 5}

5. B ∩ C

{1, 2, 3, 4, 5}

Estimate the sum of 21+17.

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