Q13 of 249 Page 31

If two events A and B are such that , and , find

Given

We know that


But, P(A)=1-0.3=0.7


Therefore,


Now, P(A∪B)=P(A)+P(B)-P(A∩B)


= 0.7 + 0.4-0.4


= 0.9


Therefore,


=1-0.9


=0.1



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