Пусть А={2,4,6,8},В={2,3,4,87}.Найти АUB,AnB,A\B

Question

Пусть А={2,4,6,8},В={2,3,4,87}.Найти АUB,AnB,A\B

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Answer 1

АUB={2, 3, 4, 6, 8, 87}
AnB={2, 4}
А\В={6, 8}