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A and B are mutually exclusive event. If...

A and B are mutually exclusive event. If `P(A)=(1)/(4),P(B)=(2)/(5)` and `P(AuuB)=(1)/(2)`.

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The correct Answer is:
`(3)/(20),(1)/(10)`
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KUMAR PRAKASHAN-PROBABILITY-PRACTICE WORK
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  16. The probability that a student will receive A, B, C or D grade are 0.4...

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  18. Without repetition of the numbers, four digit numbers are formed with ...

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