Asked by Vin Mwale

If n(AuBuC)=12 and n(AuB)=8,find n(A'nB'nC). Solution n(A'nB'nC)=12 -8 =4
Answered by Steve
n(AuBuC)=12
n(AuB)=8, so n(C)=4

n(A'uB'nC)=n((AuB)'nC)

That help?
Answered by victor
How did you get the union of the three sets
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