If n(U)=70, n(A)=25, n(B)=30, n(A∩B)=5, then n(A∪B)' isA)5 B)10 C)

1.	If n(U)=70, n(A)=25, n(B)=30, n(A∩B)=5, then n(A∪B)' isA)5 B)10 C)15 D)20
Answer» Step-by-step explanation: N (AUB) = n (A) + n (B) - n (A INTERSECTION B ) = 25 + 30 - 5 = 55 - 5 n ( AUB) = 50 n (AUB)' = U - n(AUB) n (AUB)' = 70 - 50 = 20

If n(U)=70, n(A)=25, n(B)=30, n(A∩B)=5, then n(A∪B)' isA)5 B)10 C)15 D)20

Answer»

Step-by-step explanation:

N (AUB) = n (A) + n (B) - n (A INTERSECTION B )

= 25 + 30 - 5

= 55 - 5

n ( AUB) = 50

n (AUB)' = U - n(AUB)

n (AUB)' = 70 - 50 = 20

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If n(U)=70, n(A)=25, n(B)=30, n(A∩B)=5, then n(A∪B)' isA)5 B)10 C)15 D)20​

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If n(U)=70, n(A)=25, n(B)=30, n(A∩B)=5, then n(A∪B)' isA)5 B)10 C)15 D)20