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No, these are a bunch of independent circles. Look carefully.
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From where comes the hole? How can this be true? Brain strom to find out the truth. -
Concentrate! Keep staring at the black dot. After a whilethe gray haze around it will appear to shrink. -
Blowing your own trumpet! Is Clinton holding a saxophone or blowing his own trumpet(literally)? -
Solid or hollow! WARNING! This one will give you a headache! :-) -
How many colors do you see? There are only 3 colors: White, green, and pink.There seem to be two different shades of pink,but there is only one pink.
