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the probability that the system functions properly

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Intern
Joined: 04 Jan 2018
Posts: 2
the probability that the system functions properly  [#permalink]

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04 Jan 2018, 07:36
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A security system is manufactured with a "fail-safe" provision so that it functions properly if any two or more of the three main components A, B, and C are functioning properly. The probabilities that components A, B, and C are functioning properly are 0.45, 0.90 and 0.92 respectively.
What is the probability that the system functions properly?

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Math Expert
Joined: 02 Sep 2009
Posts: 52327
Re: the probability that the system functions properly  [#permalink]

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06 Jan 2018, 07:10
IvanKudo wrote:
A security system is manufactured with a "fail-safe" provision so that it functions properly if any two or more of the three main components A, B, and C are functioning properly. The probabilities that components A, B, and C are functioning properly are 0.45, 0.90 and 0.92 respectively.
What is the probability that the system functions properly?

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

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Re: the probability that the system functions properly &nbs [#permalink] 06 Jan 2018, 07:10
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