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The chance of an accident in three facto...

The chance of an accident in three factories A, B, C in a year is 5 in 25, 6 in 36 and 8 in 64 respectively. Find the chances that an accident may happen in (i) at least one of them (ii) all of them.

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The correct Answer is:
`(i) (5)/(12)(ii) (1)/(240)`
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