MOST PEOPLE DOING MENTAL CALCULATION USING ABACUS (Multiple Venues) " WAS ORGANIZED BY THE WORLDWIDE BOOK OF RECORDS ON 27 FEBRUARY 2022 VIA ZOOM MEETING AND A TOTAL NUMBER OF 310 PARTICIPANTS FROM ALL OVER THE WORLD TOOK PART IN THE EVENT.
MOST PEOPLE DOING MENTAL CALCULATION USING ABACUS- Abacus World Record Event
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