To do the method, begin by writing the two numbers you want to multiply at the top of two columns. In the left column, you progressively halve the number and take the integer floor of any “and a half” ...

Here’s the secret behind one of the mathematical tricks that Persi Diaconis, of Stanford University, developed for his magic act: In order to guess the cards held by five audience members who have all ...

YouTuber Kevin Lieber (who hosts the popular Vsauce2 series) has brought a classic math magic trick back from its ‘90s heyday. In the video, Lieber walks viewers through a magic trick where they ...