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  Spatial Awareness

Three Moves
 
Q There are 10 letters in the triangle. Change the triangle so that it points down. Move one letter at a time. You have only three moves. (Hint: Lay 10 pennies out so that they match the letters in the triangle. Then you can try out different moves.)
A
       B C
      D E F
     G H I J

 
A Move G so that it is next to B. Move J so that it is next to C. Switch A from the top to the bottom of the triangle to make the point.
A
       B C
      D E F
     G H I J

G B C J
      D E F
       H I
        A

Source: Lowell House,Brain Games,p. 37