Resposta :
Resposta:
Explicação passo a passo:
A= {x∈N / x<6}, => A = {0,1,2,3,4,5}
B= {x∈Z / -3< ou igual x < maior ou igual a 4}, => {-3,-2,-1,0,1,2,3,3}
C= {x∈Z* / -3< ou igual x<5} => C = { 0,1,2,3,4}
a) A U B U C => {-3,-2,-1,0,1,2,3,4,5}
b) A n B n C => A n B ={0,1,2,3,4} ∩ C => {0,1,2,3,4}