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  1. Electrical
    I must wire 3 lights using any type of switch Switch 1: when up must only turn on lamp A (switch 2&3 must remain down position) Switch 2: when up must only turn on lamps A&B (switch 1&3 must remain in down position) Switch 3: when up must turn on lamps A,B&C (switch 1&2 must remain in down...
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