А∪С = {1,2,3,4,5,6,8,9,10,12}
а) (А∪С)∩В = {2,3,6,10,12}
б) (А∪С)\В = {1,4,5,8,9}
С\B = {1,5,9}
в) С\B∪А = {1,2,4,5,6,8,9,10,12}
А∩B = {2,6,10,12}
г) А∩B∩C = {2,12}
А∩С = {2,12}
д) В\(А∩С) = {3,6,10}
B∪C = {1,2,3,5,6,9,10,12}
е) (B∪C)∩A = {2,6,10,12}