When is Cheryl’s birthday?
Date posted: April 20, 2015
Earlier this month, Kenneth Kong, a television host in Singapore, posted this math logic puzzle on Facebook. It went viral, with people all over the world arguing about the answer.
Want to check your answer? Read How to Figure Out Cheryl’s Birthday from The New York Times.
Singapore is known for its high scores in problem solving and math in the Program for International Student Assessment (PISA), an exam designed to measure math, reading and science proficiency of 15-year-olds around the world. The Math Question That Went Viral, an article in The Atlantic, looks at how the way math is taught in Singapore contributes to that result.