Did you work out Cheryl’s birthday?

Earlier this week, a mathematical question from the Singapore and Asian School Maths Olympiad (SASMO) test paper, aimed at 14 year olds, boggled the world’s biggest maths brains. Everyone asking, when is Cheryl’s birthday?

Very quickly, the solution came to light, being printed in major newspapers. But soon an alternative answer emerged, making Cheryl’s birthday the math’s equivalent of #thedress – was Cheryl’s birthday July 16 or August 17? Read more