Question

..........va rog..........
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Answer 1

Răspuns:

Explicație pas cu pas:

A = {1, 2, 3, 4, 5, 6, 7}

B = {5, 6, 7, 8, 9}

C = {1, 2, 3, 7, 12}

A U B = {1, 2, 3, 4, 5, 6, 7, 8, 9}

A U C = {1, 2, 3, 4, 5, 6, 7, 12}

B U C = {1, 2, 3, 5, 6, 7, 8, 9, 12}

A ∩ B = {5, 6, 7}

A ∩ C = {1, 2, 3, 7}

B ∩ C = {7}

A U B U C = {1, 2, 3, 4, 5, 6, 7, 8, 9, 12}

A ∩ B ∩ C = {5, 6, 7} ∩ {1, 2, 3, 7, 12} = {7}

A \ B = {1, 2, 3, 4}

B \ C = {5, 6, 8, 9}

A \ C = {4, 5, 6}

A U (B ∩ C) = {1, 2, 3, 4, 5, 6, 7} U {7} = {1, 2,3 ,4 ,5 ,6, 7}