We can calculate our age in dog years, so why not Leap Day years? Unlike the canine formula — anyone can multiply their age by 7 to get the answer — the Leap Day math applies to people born on Feb. 29 ...

Cheryl's birthday puzzled Albert, Bernard and a bunch of kids from Singapore. Here's the definitive way to figure it out Get daily headlines and breaking news alerts for FREE by signing up to our ...

A maths problem set for teenagers taking the Singapore and Asian Schools Maths Olympiads (SASMO) has gone viral for one reason. It’s impossible.* “When is Cheryl’s birthday?” is the question and the ...

Never mind the color of that dress: When is Cheryl's birthday? The latest viral puzzler to stump the Internet started out as a question for students in Singapore and spread around the world after it ...

Cheryl tells Albert her birth month, and tells Bernard the day of her birthday. Albert: I don’t know when Cheryl’s birthday is, but I know that Bernard does not know too. Bernard: At first I don’t ...