18 June 2011

54. Adding Sticks without forming a Square

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How many matchsticks can be added to the structure without forming a square?

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A total of 8 matchsticks can be added before a square is formed.

You cannot add a matchstick at the bottom between 3 and 5, that would form a 4X4 square!

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1 comment:

  1. 9... The one missing on the botyom

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