Aussie math whiz answers 50yo questionAn Australian is still nervous he's made a mistake after declaring he's the first person to solve a difficult multiplication question posed in 1971. Source: Getty ImagePublished 5 April 2019 4:18pmUpdated 6 April 2019 1:58pmBy Mehdi GholizadehAvailable in other languagesSkip to article contentShare this with family and friendsCopy linkShareShare