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There are 5 machines. Probability of a m...

There are 5 machines. Probability of a machine being faulted is `1/4` . Probability of atmost two machines is faulted, is `(3/4)^3 k`, then value of k is

A

`17/8`

B

`17/4`

C

`17/2`

D

`4`

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The correct Answer is:
A
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