Penny Problem

Phoenix Tutoring PenniesProblem

You are given ten pennies arranged like this picture. Move three of them so that the arrow in the opposite direction.

Solution

Take the top penny and move it to a new row, in the center, under the bottom row into the following configuration:

x       x

x        x       x

x       x       x       x

x

Number the rows from top to bottom: 1, 2, 3, and 4. Now take the two outside pennies from row 3 (which has 4 pennies) leaving two, and move them to the outsides of row 1.

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