A maths problem that first appeared in a test for Singapore’s elite high school students has baffled internet users around the world after going viral with the hashtag #CherylsBirthday.
The question, involving a girl asking two boys to guess her birthday after giving them only vague details, first appeared in a test organised by the Singapore and Asian School Math Olympiads (SOSMA) on April 8.
Intended for 15 and 16-year-old elite secondary school students, the question states that Cheryl gives her new friends, Albert and Bernard, 10 possible dates when they asked when her birthday was. She proceeds to tell one the day, and the other the month.
