Question

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Answer 1

Respuesta:

38

Explicación paso a paso:

n(AUB) = 30

n(A - B) = 16

n(B - A) = 12

=> n(A∩B) = 2

n(A) = n(A - B) + n(A∩B) = 16 + 2 = 18

n(B) = n(B - A) + n(A∩B) = 12 + 2 = 14

Piden: 6[n(A)] - 5[n(B)] = 6[18] - 5[14] = 108 - 70 = 38