Wednesday, April 15, 2015

Cheryl Is a Good Logic Puzzle Maker and a Bad Friend




cheryl's birthday logic problem


Via NY Times:



Originally, Mr. Kong said this was a problem inflicted on fifth-graders, leading to hand-wringing that Singapore children were way better at math than everyone else in the world and worries that Singapore children were being mentally abused with convoluted logic at a young age.



It turned out the problem actually came from a math olympiad test for math-savvy high school-age students.



If you're having trouble here's the answer.



And here's the post that started it all.




Submitted by: (via NY Times)



Tagged: puzzle , friends , logic , math



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