The UKMT Intermediate Mathematics Senior Challenge is aimed at all 16-19 year olds studying mathematics i.e. year 13 and below in England and Wales, year 14 and below in Northern Ireland and S6 and below in Scotland. It is also suitable for students who may no longer be studying mathematics but have completed their GCSE (or equivalent). The challenge involves answering 25 multiple choice questions in 90 minutes and is sat in school under normal exam conditions. Pupils fill in the answer sheet in B or HB pencil and the Challenge is marked by UKMT using an optical mark reader. (Source : www.ukmt.org.uk)