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P(A uu B) = P(A nn B) if and only if the...

`P(A uu B) = P(A nn B)` if and only if the relation between P(A) and P(B) is …………

A

a) P(A) = `P(bar A)`

B

b)` P(A uu B)` = `P(A' nn B')`

C

c) P(A) = P(B)

D

d) None of these

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