In an opencast mine with shovel-dumper combination have 1 shovel and...

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In an opencast mine with shovel-dumper combination have 1 shovel and 6 dumpers. The reliability of the shovel is 0.9 and all the dumpers have equal reliability of 0.8. What is the system reliability?

A. 0.899

B. 0.576

C. 0.720

D. 0.160

Answer: Option A

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