Question

Fie multimile : A = { x € Z | - √5 < x < √11 } si B = { x € N | x cifra si p.p } . Atunci cu cat egal ( A / B ) U ( B / A) ?

Answer 1

A= { -2,-1,1,2,3}
B={1,4,9)
A / B= {-2,-1,2,3}
B / A = {4,9}

(A / B ) U (B / A) = {-2,-1,2,3,4,9}