Probability of an event that newly purch...

Probability of an event that newly purchase mobile and laptop will be in working condition after 8 years is `(7)/(12)` and `(7)/(9)` respectively. Then .... is the probability that both are not in working condition after 8 years.

`(5)/(54)`

`(14)/(54)`

`(49)/(108)`

`(14)/(108)`

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