A product is made up offive components. They are wired in a series with reliabilities of 0.72, 0.55, 0.73, 0.83, and 0.77.There is a backup system that will be engaged if any component in the primary system fails.

What is the reliability of this design?

(Use four decimal places.Enter answer without a percent sign, e.g. 50% would be entered as .5)