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                | Advanced Math |  | 
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	 	| Question : |  
	 		| What are 'Arithmetical Restorations' ? |  
	 	| Answer :
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	 		| The class of problems dealing with the reconstruction of arithmetical sums from which various digits have been erased are 
			called Arithmetical Restorations. This kind of exercise has attracted a good deal of attention in recent years. |  
	 		| Arithmetical Restorations were invented in India, in the Middle Ages. They can also be refered as Skeletons. |  |