[obm-l] =?iso-8859-1?Q?d=FAvidazinha!!!!?=

[TSD]

calcule: n(A U B) = 24 n(A "c"B ) = 4 n(B U C) = 16 n(A - C) = 11 n(B - C)= 10 , calcule a) n(A - B ) b)n(A "c" B "c" C ) c) n(B - ( C U A )) d)n(A "c" B) - C ) e) n(B - A(A U B))