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$.$Reliability and Layout Selection

mank you:

This section has a brand$-$new $Cx-$Robot which has two major series components. The reliability of component $1$ is $0\mathrm{.}99$ and component $2$ is $0\mathrm{.}98.$ All of the components must function in order for the robot to operate effectively.

What is the reliability of the CX$-$Robot?

$0\mathrm{.}9156$

$0\mathrm{.}9910$

$0\mathrm{.}9702$

$0\mathrm{.}7971$