Question

Fie A ={x | x € N*,x< 4 } B= {x|x € Z,-2 < x < 3}.
Determinați A n B, A u B, B\A​

Answer 1

A={1, 2, 3}

B={-1, 0, 1, 2}

A n B = {1, 2}

A u B ={-1, 0, 1, 2, 3}

B\A={-1, 0}