Most car manufacturers are only prepared to back their cars with a 2 year warranty. But Kia are so confident in the build quality of their cars that they are prepared to offer a 7 year warranty on every single one of them.To dramatise the benefit of a Kia 7 year warranty (in an engaging and tongue-in-cheek way) we decided to bring together the greatest minds on earth and work out a (ridiculously simple) mathematical problem: Is seven more than two?