With your back turned, ask a friend to pick a number between 1 and 60.
Ask your friend to write this number down on a piece of paper.
Tell your friend to flip over the piece of paper, not letting you see the number that was written down.
Turn around and face your friend.

Ask your friend to look at the chart below.
Ask your friend  to find his/her lucky number and tell you only the letters where the lucky number appears.

Magically identify the number.
Ask your friend to flip over the piece of paper and smile!