Question

A={ * ∈ N* | x este rest la impartirea cu 5 }
B= { * ∈ N | 2 ≤ x < 8 }
A U B , A / B , B / A

Answer 1

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