The teaser challenges people to guess the number that will replace the question mark. The brain teaser shows an array of numbers written horizontally and vertically.

How quickly can you guess the missing number? The image above shows five dice with an array of numbers on each side. There is also a series of numbers reading: "19,11,11,?,12." ...

A new baffling maths puzzle has been leaving people scratching their heads as they struggle to find the missing number in just 10 seconds - can you solve the brain teaser?