A ve B kümeleri E evrensel kümesinin alt kümeleridir.
2.s(B’) = 3.s(A \ B) = s(A’vB’)
s(A’) = 20
olduğuna göre s(A\B) kaçtır
A) 10
B) 12
C) 15
D) 18
E) 20
Sagot :
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