Challenge the super brain! It is fun for kids and grownups!
Use the form above to change the configurations: 1 Number of points 2 Show the points in colors or in black & white 3 Show / hide the answer 4 Show / hide rotating covering fan
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Number of random points in the figure on the right: 1000. The figure on the left is exactly the same except one random point was removed. The task is to find the point removed.