The probability that at least one of the events A and B occurs is 3/5. If A and B occur simultaneously with probability 1/5, then \[P({A}')+P({B}')\] is [DCE 2002]

The probability that at least one of the events A and B occurs is 3/5.

1.	The probability that at least one of the events A and B occurs is 3/5. If A and B occur simultaneously with probability 1/5, then \[P({A}')+P({B}')\] is [DCE 2002]
A.	\[\frac{2}{5}\]
B.	\[\frac{4}{5}\]
C.	\[\frac{6}{5}\]
D.	\[\frac{7}{5}\]
Answer» D. \[\frac{7}{5}\]

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The probability that at least one of the events A and B occurs is 3/5. If A and B occur simultaneously with probability 1/5, then \[P({A}')+P({B}')\] is [DCE 2002]

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