in a house geyser is kept on for 24 hours a day. because of thermostat setting it automatically turns off for a total of 4 and a half hours a day. a red light is shown when the power is on. what is the probability that light will be off
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The thermostat keeps checking the temperature of water and switch-on the power supply once the temperature of water drops. The thermostat makes sure that the water is heated till the set temperature. There are two types of geysers available in the market: One with thermostat settings outside and changeable.
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