The probability that at least one of A and B occurs is 0.6. If A and B occur simultaneously with probability 0.3, then \[P({A}')+P({B}')=\]

The probability that at least one of A and B occurs is 0.6. If A and B

1.	The probability that at least one of A and B occurs is 0.6. If A and B occur simultaneously with probability 0.3, then \[P({A}')+P({B}')=\]
A.	0.9
B.	1.15
C.	1.1
D.	1.2
Answer» D. 1.2

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The probability that at least one of A and B occurs is 0.6. If A and B occur simultaneously with probability 0.3, then \[P({A}')+P({B}')=\]

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