PUZZLES FOR YOU

BULB

This is one of my favorite free printable logic puzzles with a real life solution.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?

ANSWER:

           Keep the first bulb switched on for a few minutes. It gets warm, right? So all you have to do then is ... switch it off, switch another one on, walk into the room with bulbs, touch them and tell which one was switched on as the first one (the warm one) and the others can be easily identified :-)

MIDNIGHT

 If it were two hours later, it would be half as long until midnight as it would be if it were an hour later. 

What time is it now?   

Answer:

           9 pm

WHAT IS CORRECT

Is it correct that seven and five is thirteen or seven and five are thirteen?

Answer:

      Of course, adding seven to five makes twelve and not thirteen.