A dad-of-two has stumped the internet when he shared a maths question that was given to seven-year-olds.
Dr Kit Yates, author of the book The Maths Of Life And Death, shared the baffling question on Twitter.
He asked: "This was my daughter's (7) maths homework on Monday. Can someone help me out with the answer?"
The parent added: "I'm not being facetious here. I'm genuinely not sure what I should advise her the correct answer should me."
In the image shared online, it shows a semi-circle in a box with the question: "True or false?
"This shape has two right angles. Explain your answer."
So do you have any idea what the answer is?
Since the maths lecturer posted the question, it racked up 2,400 likes and hundreds of retweets.
One said: "I'm going for yes, on the basis that in as much as a single angle exists for a curved line it should be 90 degrees at those two points. (i.e. there's no other single value that makes sense)."
Another added: "Someday I'd like to teach an undergraduate class titled 'Central Questions in Philosophy' where the only course text is third-grade math problems."
While a third commented: "I'd say no because there are curved lines but maybe I'm wrong. That seems damn tough for someone so young."
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The lecturer agreed that the question was a real-head scratcher and luckily he explained there is a strong argument for saying the answer is "True".
He told Mirror Online: "As a mathematician though I am aware that we can also think about the angle between two curved lines as the angle that their tangents (the straight lines parallel to the curve at that point) would make.
"If you 'zoom in' then sure enough the tangents to the semicircle do meet its diameter at right angles. So there's definitely a strong argument for putting 'True' down as the answer."
Got another answer? Leave your comments below!
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