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Logic problems. The solution to these problems does not usually require a lot of math, but will take some thinking until you find the right approach.
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Difficulty: 1 of 5 Latest: Tic-tac-toe related Rating: 2.00
Given a 3x3 tic-tac-toe grid.
If you are allowed to place just one X in each of the small squares, what is the greatest number of Xs that can be put without getting "three in a row" in any of the 8 directions?

How many distinct solutions are there?

(No Solution Yet, 2 Comments) Submitted on 2014-12-12 by Ady TZIDON   
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