While there is a lot to miss about our school years, it's unlikely that exams, particularly maths exams, will anyone's list of fond memories.
While some questions are easier than others and children may sometimes rely on parents for help, experts at Save My Exams in the UK found a GCSE-level maths question so tough even parents couldn't get it right.
In Ireland, the question is the equivalent of those posed to Junior Cert students at the age of 15 or 16.
