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A system consists of three units, a, b, and c whose reliability block diagram is in series . The failure rate for each unit is

A system consists of three units, a, b, and c whose reliability block diagram is in series. The failure rate for each unit is constant as follows: a = 0.00000598, b = 0.00000326 and c = 0.00000928. All have units hours $ .

Determine the reliability of the system at time 1000 hours.

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