Cheryl Is a Good Logic Puzzle Maker and a Bad Friend

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cheryl's birthday logic problem
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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.

Not "Subtraction" As Much As "Eradication"

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burgers,friends,math,rage comic,subtraction
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FALSE!

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real life,Twin Peaks,math,funny,algebra
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Mathematically How Do You Best Shuffle Cards

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Cup Troll Has Bad Maths

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bad,stolen,cup,fort,math
Tags
By Unknown
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Math 439: The Beautiful Sinrise and Sinset

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class is in session,math,math 439,sunset
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CONNECT THE SQUARES!

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hypercube,interesting,math,Square
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