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Doughnut Hole

Science brain teasers require understanding of the physical or biological world and the laws that govern it.

 

Puzzle ID:#2212
Fun:*** (2.51)
Difficulty:** (1.66)
Category:Science
Submitted By:Cascas***

 

 

 



If a solid piece of iron shaped as a doughnut was placed under extreme heat, what would the hole in the middle do?




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