Five-year-old Slovenian among best in the world in fast calculation

Ptuj, 2 December - A five-year-old girl from Ptuj, Sia Pernat, has won the highest possible prize, the Champion Cup, at the Brainobrain international competition in fast calculation in Dubai. She solved more than 25 calculations with two-digit results in three minutes in the abacus competition, making virtually no mistake, the city of Ptuj said on Friday.