Find the intersection and union for L={-1,1,2} I={-1,3,7}

Question

Mathematics

Serena Brennan

6 March, 02:38

Find the intersection and union for L={-1,1,2} I={-1,3,7}

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Answers (1)

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Cassie Vincent · Answer 1

Intersection means elements both have. Both sets have - 1 but they have nothing else in common so the intersection is {-1}

Union means combining the sets so {-1, 1, 2, 3, 7} Note that I only wrote 1 twice. No duplicates allowed!