Two electronic communications satellite S1 and S2 operate independently and have probabilities of 0.15 and 0.1 respectively of failing. Draw

Two electronic communications satellite S1 and S2 operate independently and have probabilities of 0.15 and 0.1 respectively of failing. Draw a tree diagram to represent this information. Hence, find the probability that (a) neither circuit fails (b) at least one circuit fails (c) exactly one circuit fails


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