Question

Sabendo que: A={1,3,4} B={4,5,6,7,8} C={2,7,8,9}

Me respondam essas duas

(A U B) - C =

A - (A ∩ B) =

Answer 1

AUB= {1,3,4,5,6,7,8}
{1,3,4,5,6,7,8} -{2,7,8,9}= {1,3,4,5,6}

A- {4}= {1,3,4}- {4}= {1,3}