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érdekességek
- matek trükk-3
- Arab-római számváltás
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matek trükk-3
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Legyen "x" a tanárod életkora, és "a" a gondolt egész szám. ( 0...9 ) Akkor az eredmény 10x - 9a = (!) = 10(x - a) + a és ebből (x - a) + a = x RENDBEN? ( vagy mégsem? ) |
Arab-római számváltás
Gyakorloni lehet az arab és a római számok átváltását. |
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