Many online IQ tests come across as little more than digital parlor tricks. Users often end up with vague, unverified results. In other cases, the platforms tell people what they want to hear. Either ...

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Can you pass the world's shortest IQ test? Only 17 per cent of people can (Image: /iStockphoto) Fewer than one in five people pass this IQ test, thought to be the shortest in the world at only three ...