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If P(A) = 4/5, P(B') = 2/5, P(A nn B) = ...

If P(A) = 4/5, P(B') = 2/5, `P(A nn B)` = 1/2, then P(A n B') is equal to

A

a) 3/10

B

b) 1/5

C

c) 4/5

D

d) 1/2

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