I love it when stuff goes viral that is actually intellectually stimulating! This brings back fond memories of symbolic logic classes in college. A fun brain workout! http://www.nytimes.com/2015/04/15/science/a-math-problem-from-singapore-goes-viral-when-is-cheryls-birthday.html
Maths problem for teenagers left people across world stumped
'When is Cheryl's birthday?' The maths problem set for teenagers that has baffled the world A maths problem for 14-year-olds has baffled people across the world Question uses logical reasoning and aims to sift out the most intelligent It was set in the Singapore and Asian Schools Maths Olympiads (SASMO) Teaser appeared as number 24 out of 25 questions to test students
A Math Problem From Singapore Goes Viral: When Is Cheryl’s Birthday?