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Study Stuff for MCA Examinations - NIMCET
Study Stuff for MCA Examinations - NIMCET
Previous Year Question (PYQs)
The probability that at least one of the events A and B occurs is 0.6.
If A and B occur simultaneously with probability 0.2,
then $P(\bar{A}) + P(\bar{B})$ is:
Solution
$P(A \cup B) = 0.6$, $P(A \cap B) = 0.2$ We know, $P(\bar{A}) + P(\bar{B}) = 2 - P(A) - P(B)$ and $P(A \cup B) = P(A) + P(B) - P(A \cap B)$ $\Rightarrow P(A) + P(B) = 0.6 + 0.2 = 0.8$ $\Rightarrow P(\bar{A}) + P(\bar{B}) = 2 - 0.8 = 1.2$ $\boxed{\text{Answer: (C) 1.2}}$Online Test Series, Information About Examination,
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