tolong bantuannya kawan beserta cara ya...

dik : A = {1,2,3,4,5,6,7,8,9,10,11}
B = {2,3,5,7,11}
S = {0,1,2,3,4,5,6,7,8,9,10,11,12}

jawabannya :
a) (AnB)c - (B-A)
= (2,3,5,7,11) - (5-11)
= 5 - (-6)
= 5+6
= 11

semoga membantu.....
maaf kalau salah....