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The first project we would like to suggest is to just repeat the calculation we show, using one or more of the applications in Plan Ceibal´ computers.
Then, it could be resolving other problems:
- Given seven of the eight digits in an ID card, calculate the missing digit.
- Whenever there is an error, is the calculation going to return the wrong control digit? Justify the answer.
- If we transpose two consecutive digits, a very frequent error, will the calculation result change? Are we going to be able, in such case, to find out what the error was and correct it?
- Are there other applications in the real world for control digits, besides the ID card?