Longest-standing maths problem was solved in 365 yrs
According to Guinness, the world's longest-standing maths problem was solved 365 years after it was posed in 1630. Called Fermat's Last Theorem, it stated that the equation 'x^n + y^n = z^n' had no positive integral solutions for n greater than 2. It was finally solved in 1995 by British mathematician Andrew Wiles.