8. Dados los conjuntos A, B, se sabe que : n(A U B) = 18
n(A - B) = 7
n(ΑΔΒ) = 13
Hallar: n(A) + n(B)
b) 20
c) 21
a) 25
d) 23
e) 17
n(A - B) = 7
n(ΑΔΒ) = 13
Hallar: n(A) + n(B)
b) 20
c) 21
a) 25
d) 23
e) 17
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