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An electrical system has the switches shown in the following diagram to indicate system operation based on the switch positions. The probability that Switch A is closed is: Pr(SwitchA = Closed) = 9/10 ,Pr(Switch A = Open) = 1/10 The probability the Switch B selecting the Red LED or the Other LEDs is: Pr(Switch B = Red) = 1/3 ,Pr(Switch B = Other LEDS) = 2/3 The probability that the Selector switch S selects the various colored LEDs is: Pr(Blue) = 1/10 ,Pr(Yellow) = 3/10 ,Pr(Green) = 2/10 ,Pr(White) = 4/10, Other I LEDs Selector . . . . SWItch S SWllCh A Switch B . Red DC 0 Red Blue Yellow Green White (a.) What is the probability that all the LEDs are off ? (b.) What is the probability that the Green LED is on ? (0.) What is the probability that either the Red LED or the White LED is on ? (d) Given that the Switch B is permanently set to the \"Other LEDs\" position, what is the probability that either the Blue LED or the Yellow LED is on