Given failure intensities: (nominal state). After burnout of any element intensity of electric current in other -th element increases times and failure intensity increases times ( ). Find algorithm (description) of computing probability that current will flow through the system at any given time .

Probability (at nominal state) that -th will not burnout before is .

Does anybody have any idea?

I had problems with adding attachments by "Manage attachments" (it didn't upload), so I added it this way.