Question

Scrieti elementele urmatoarelor multimi:A={x|x apartine N,(x+2)|50 si 3 |x}

Answer 1

3|x, ⇒ x∈ M 3
x+2∈ D 50
x+2∈{1,2,5,10,25,50}
x∈ {0,3,8,23,47}
Nr multiplii de 3 sunt 0 si 3
A={0,3}