Counting will get you nowhere. Try a little combinatorics instead. By Kenneth Chang A couple of weeks ago, I wrote about a viral math problem — 8÷2(2+2) = ? — that drew the disdain of many ...
What seems like an easy question has stumped most people online. Most people can get the answer wrong on their first try. Only one in 20 observant minds can manage to correctly count all the hidden ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results