There's a new Guinness World Record holder for how fast someone can do math. Aaryan Shukla — who has been dubbed "the human calculator" can solve complex problems in his head in seconds. OK, Ari, what ...
FORT LEE — For 10 seconds, a series of 50 random three-digit numbers flashed on the screen. After another second, abacus master Jeonghee Lee announced she'd finished the mental addition, correctly ...