A) 5/7
B) 2/3
C) 1
D) None of these
Correct Answer: A
Solution :
Let\[P(B)=b,\]then we have \[P(A\cup B)=P(A)+P(B)-P(A).P(B)\] (Since A and B are independent events.) \[\therefore \] \[0.8=0.3+b-0.3\times b\]\[\Rightarrow \]\[b=5/7\]You need to login to perform this action.
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