17:31, Mon, May 23, 2016 Updated: 17:58, Mon, May 23, 2016 But while most of us rely on a good old textbook for the answer, one particularly Maths revision book has left more than a few minds puzzled.

Forget cigars poking out of walls and owls lurking in trees - this seemingly normal algebra textbook is causing Inception-levels of confusion. An initial scan of the front cover shows a school book ...

Reddit users were left scratching their heads at this puzzling conundrum This front cover of an algebra textbook has left the internet baffled – but can you work out what’s wrong with it? The image ...