Determine o conjunto X tal que:{a, b, c, d} ∪ X = {a, b, c, d, e}, {c, d} ∪ X = {a, c, d, e} e {b, c, d} ∩ X = {c}.

Question

Rodrigo · Accepted Answer

Determine o conjunto X tal que:{a, b, c, d} &cup; X = {a, b, c, d, e} &rArr; e &isin; X
{c, d} &cup; X = {a, c, d, e} &rArr; a &isin; X, e &isin; X
{b, c, d} &cap; X  = {c} e &isin; X, b &notin; X e d &notin; X
X = {a, c, e}