A particular system in a space vehicle must work properly in order for it to gain reentry into the earth’s atmosphere. One component of the system operates successfully only 85% of the time. To increase the reliability of the system, four of the components are installed in such a way that the system will operate successfully if at least one component is working. What is the probability that the system will fail? Assume the components operate independently.

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A: Farmula used nCr=n!/(r!(n-r)!) r!=r×(r-1)×..×3×2×1

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A:

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A: 5.

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A:

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A:

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