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Among the examinees in an examination, 2...

Among the examinees in an examination, 25%, 30% and 45% failed in statistics, in mathematics and in at least one of statistics and mathematics respectively. An examincee is selected at random. Find the probability that he failed in statistics only.

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The correct Answer is:
`(3)/(20)`
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CHHAYA PUBLICATION-PROBABILITY-SAMPLE QUESTIONS FOR COMPETITIVE EXAMS
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  2. If A and B are two independent events of a random experiment and P(A) ...

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  4. If A and B are two mutually exclusive events, then-

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