Pupils have been taking part in several maths challenges this month (with some more still to come).  

Thursday 4th February 2016 saw 90 Year 11 and 12 Mathematicians participate in the UKMT Intermediate Mathematics Challenge. The challenge involves answering 25 multiple choice questions in one hour and is sat in school under normal exam conditions. Pupils fill in the answer sheet and the Challenge is marked by UKMT. 

This is one of the questions from the paper to have a go at...

Top students nationally receive a gold, silver or bronze certificate and each institution receives a Best in School certificate. Around 500 of the highest scorers in each school year are invited to take part in the Intermediate Mathematical Olympiad papers. A further 5,500 pupils from across all the year groups are invited to sit either the grey or pink European Kangaroo papers. These are one-hour papers with 25 multiple choice questions, taken by pupils from over 30 countries worldwide.

So here is the answer and solution to question 9