Question

se a= (4 5 6 7 ) b= (5 6) e E= (5 6 8) calcule : A-E E-B A-B .

Answer 1

a= (4 5 6 7 ) b= (5 6) e E= (5 6 8)

1) a-e = {4;7}

2) e-b = {8}

3) a-b = {4;7}