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20 questions
If A = {1, 3, 5, 7, 9} and B = {2, 3, 5, 7}, what is A ∩ B?
{3, 5, 7}
{2, 3, 5, 7}
{2, 3, 5, 7, 9}
{1, 2, 3, 5, 7, 9}
Given the following Venn diagram, let blue represent the students taking drama (D) and green represent the students taking math (M).
What is n(D ⋃ M)?
5
7
2
4
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