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Which is the intersection of the sets {1, 4, 8, 9} and {2, 4, 7, 9, 11}?

{4, 9}

{1, 2, 7, 8, 11}

null set

{1, 2, 4, 7, 8, 9, 11}

User A Gore
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1 Answer

4 votes
7
Here is a tip:
so you have {1 2 4 7 8 9 11} Take your fingers on each end and cover each number till you get you the middle.
User Jeffstern
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