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Question
Choose the correct alternative:
A, B, and C try to hit a target simultaneously but independently. Their respective probabilities of hitting the target are `3/4, 1/2, 5/8`. The probability that the target is hit by A or B but not by C is
Options
`21/64`
`7/32`
`9/64`
`7/8`
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Solution
`21/64`
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