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In my house there is one tube light for each room. I am now in the kitchen. No one else is in the house. How many tubelights must be switched on in the house now if I want to conserve electricity? __ |
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Answer» In my house there is one tube light for each room. I am now in the kitchen. No one else is in the house. How many tubelights must be switched on in the house now if I want to conserve electricity? |
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