My Hardest Cambridge Maths Interview Question (3/3)

In this video I’m walking you through the hardest question from my actual Oxbridge maths interview — the one that really stuck out to me and was something id never seen before. I break down how I approached it, what I tried first, what didn’t work, and the small idea that finally got things moving. Make sure to pause and have a go yourself The goal here isn’t to show off and have perfect maths — it’s to show the kind of reasoning interviewers want to see, even when you’re stuck. Hopefully seeing the full thought process (including the slightly chaotic bits) gives you a clearer picture of what real interviews are like and how to stay calm when the problem looks difficult. If you’ve got interviews coming up, I hope this helps you feel a bit more prepared — or at least reassured that struggling is completely normal. Make sure to stick till the end for some final tips For all of the step papers, visit [www.rewarding-learning.co.uk](http://www.rewarding-learning.co.uk/) Chapters 00:00 Intro 00:32 Question 06:26 Final Tips