SPOILER ALERT!! Have you heard of Cheryl’s birthday puzzle? How good are you — or you children — at maths? That question has caused panic amongst parents in Singapore after a devilishly complex puzzle was published by the organisers of a maths competition. The test challenged mathematicians to work out the date of a girl’s birthday based on a small number of clues. But the testers mistakenly said the fiendish calculation was appropriate for primary school pupils — when in fact, it was intended for elite fifteen to sixteen year olds. So how difficult was it? Mathematician and author, Alex Bellos, took me through it.
Subscribe to BBC News HERE http://bit.ly/1rbfUog
Check out our website: http://www.bbc.com/news