Are you smarter than an 11-year-old? MailOnline is once again challenging you to try and solve the same problems posed to children preparing for an 11+ exam. Every year, some 100,000 pupils across the ...

An elementary school math question has left not only students but also a seasoned teacher—and much of the internet—scratching their heads. Bobby Seagull, @bobby_seagull, shared the puzzle his friend's ...