The entire internet is struggling with this simple maths puzzle for teenagers

THIS LOGIC QUESTION was part of the Singapore and Asian Schools Maths Olympiads – a mathematics competition for teenage pupils held last week.

Singaporean TV presenter Kenneth Kong shared it on his Facebook page, saying that it “causes a debate with my wife”.

And since then, practically everyone on the internet has been trying to solve it.

It’s very difficult.

Omg so what's Cheryl's birthday???????????
— Omg it's Yahya! 얗야 (@fallensuperhero) April 13, 2015

Source: Omg it's Yahya! 얗야/Twitter

People can’t agree on an answer.

CHERYL'S BIRTHDAY IS THE 16 OF AUGUST MOTHAFUCKAS
— genevieve (@st_genn) April 13, 2015

Source: genevieve/Twitter

Although we are sympathetic to this solution.

Have you solved it? If not, our former colleague Gavan Reilly at Today FM is here to help.

All we can say is that Cheryl isn’t getting any cards for her birthday.

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