3 years ago

If n(A) =15 n (B) = 9 n(A∩B) =4 find n(A U B)

Mathematics

1 answer:

Xelga [282]3 years ago

5 0

Answer:

Step-by-step explanation:

n(A) only =15-4=11

n(B) only=9-4=5

n(A n B)=4

n(A U B)=11+5+4=20

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