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In how many ways can a rectangular region be cut into eight congruent pieces?
 
Well, to start with bisect it vertically and horizontally then each of the new rectangles can be divided into an infinite number of congruant pairs by a line thru the center to two edges. Any line will do it. It doesn't even have to be straight as long as it is symetrical across the center. If I remember that's aleph-2, the third largest infinity. If that's not enough...
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Gene
 
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