Resposta:

A = {-4,-3,-2,-1,0,1,2}

B= {0,1,2,3}

C = {-1,0,1,2,3,4}

D={3,4,5,6,7,8}

a) AΠBΠC = {0,1,2} ΠC = {0,1,2}

b) AΠBΠCΠD = {0,1,2}Π{3,4} ={ }

c) (AUD) Π (BUC) = {-4,-3,-2,-1,0,1,2,3,4,5,6,7,8} Π {-1,0,1,2,3,4}

= {-1,0,1,2,3,4}

d) (AΠD) U (BΠC)

=∅ U {0,1,2,3} = {0,1,2,3}