An old calculator uses a seven-segment display, in which numerals are represented by different patterns of vertical and horizontal line segments. But the device is faulty and no longer shows any ...

Another puzzle that went viral. This isn’t the only brain teaser that has left people puzzled. Earlier, a tricky equation was ...

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Test your knowledge about the human digestive system... from the mouth to the bum! Help Dr Chris, Dr Xand and Dr Ronx on their fantastic voyage.