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Let A and B two events such that the probgability that exactly one of them occurs is `2/5` and the probability that A or B occurs is `1/2`, then proba

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Let A and B two events such that the probgability that exactly one of them occurs is `2/5` and the probability that A or B occurs is `1/2`, then probability of both of them occur together is :
A. `0.02`
B. `0.10`
C. `0.01`
D. `0.20`
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Correct Answer - B
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