Can you do the maths puzzle for Vietnamese eight-year-olds that has stumped parents and teachers? - http://gu.com/p/493zk/stw
@dotski_w trial & error would take a while - at least manually. some people might be good at guesstimating where the numbers would fit...
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@hbdchick agree and think thats only way without IT, but not really maths IMO..also suspect v.few if any kids got this, many tests go from.. -
@hbdchick ..0.1% will get wrong to 0.1% will get right just to get full range of percentiles..think guardian overselling this a bit! ;)
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