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A light string has 10 bulbs, if one bulb fail, all the other [#permalink]

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01 Oct 2004, 05:28

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A light string has 10 bulbs, if one bulb fail, all the other bulb will fail, the probability for one bulb to fail is 0.06,what is the probability for no bulb to fail?

ok i'll take a crack at it...but i dont know if this is right.

The probability of one failing is 0.6. So, 0.06*10=.60 is the probability that one of the 10 will fail. The probability of one not failing is 1-.60 = .40.

Not sure if this is right, just trying to get involved with the forum and learn from others and give my thought process.