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The probability that a bulb produced by ...

The probability that a bulb produced by a factory will fuse 150 days of use is 0.05.Find the probability that out of 5 such bulbs(i)none

A

`1-(19/20)^5`

B

`(19/20)^5`

C

`(3/4)^5`

D

`90(1/4)^5`

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