Ta knjiga je v tujem jeziku: Angleščina
Lastnosti knjige
- Jezik: Angleščina
- Založnik: Profile Books
- Vezava: Knjiga – Brošura
- Število strani: 272
Originalni opis knjige
First developed during WW2, the Trachtenberg speed system makes possible high-speed arithmetical calcula tions with a remarkable degree of accuracy. The system has e ven been known to beat computer calculations – in some insta nces – in terms of speed '