Abbreviation for British Mathematical Olympiad. The BMO is the second round of exams used in the UK to select the IMO team. The BMO exams are similar to the IMO exams but somewhat easier, consisting of tricky mathematical problems. Twenty sixth form students are selected to go on a training course on the basis of their BMO answers. At the end of the training session, they are given another exam, and the results of this exam are used to select six people plus a reserve for the IMO team.