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A math problem intended for students in Singapore has adults across the world scratching their heads.
The viral math question (bet you never thought you’d read that, huh?) was originally posted on Facebook by Kenneth Kong, a Singaporean TV host.
It involves two men, Albert and Bernard, trying to figure out the birthday of a woman named Cheryl with some clues she’s given — but many people found the problem impossible to solve.
Thousands pondered the mystery on social media, using the hashtag #cherylsbirthday, and many compared it to another viral meme that had the world stumped earlier this year: the blue and black (or was it white and gold?) dress.
When the Singapore and Asian School Math Olympiads, the organization that created the question, caught wind of the frustration it caused, the group posted a response on its Facebook page, admitting, “this is a difficult question meant to sift out the better students.”
Luckily, they also posted the solution:
Critics argued that the problem was more about logic than math, but most were just relieved to have an answer.
“Share the solution, and spare Cheryl from being criticized as a difficult woman,” Kong joked in an update on Facebook.