Can you do the maths puzzle for Vietnamese eight-year-olds that has stumped parents and teachers?
All you need to do is place the digits from 1 to 9 in the the grid. Easy, right?
Continue Reading http://www.theguardian.comAll you need to do is place the digits from 1 to 9 in the the grid. Easy, right?
Continue Reading http://www.theguardian.com
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