Question

considere os conjuntos D={1,2,4},N={1,3,4,5}E={5,6,7,8},determine:
A=D U N
B=N-D
C=E ∩ N
D=D ∩ E

Answer 1

a = { 1,2,3,4,5}
b= {3,5}
c={5}
d={}