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Four persons can hit a target correctly ...

Four persons can hit a target correctly with probabilities `(1)/(2),(1)/(3),(1)/(4)` and `(1)/(8)` respectively. If all hit at the target would be hit, is

A

`25//192`

B

`7//32`

C

`1//192`

D

`25//32`

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The correct Answer is:
D
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