Let's see, I would think your chances are about ~~~~~ to 1 Blessed Be... )O(
ceiling, floor, table, either one, it all depends on the wattage of the bulb. the higher the wattage, the higher the bill. good luck!
Your lamp or lamps have nothing to do with your end tables. If you wanted for the people on the sofa to be able to read of have a softer lighting then you could have the lamps on end tables or placed upon other furniture in the room. End tables have ...