1.

3.n(A)=7 n(B)= 9. and n(A U B) =14. Then n(A ∩B )

Answer»

ong>Answer:P>

P(AUB) = P(A) +P(B) -P(ANB)

MULTIPLYING WITH n(s) ON BOTH SIDES

n(AUB) = n(A) +n(B) -n(AnB)

14= 7+9-n(AnB)

n(AnB) = 16-14

=2

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