PUZZLE 1

others 440 views 1 replies

There are three switches downstairs. Each corresponds to one of the three light bulbs in the attic. You can turn the switches on and off and leave them in any position. 

How would you identify which switch corresponds to which light bulb, if you are only allowed one trip upstairs?

Replies (1)

No need to identify. Switch on all the three. 


CCI Pro

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