STEP workshop 2 - Open Day 2021

Mathematics Open Day 2021 at the University of Cambridge - Gabriel, one of our Student Ambassadors, guides participants through the solution to STEP question 12-S2-Q2*, together with Israel, who's also a Student Ambassador.
* (That's question 2 from STEP 2 in 2012, which you can download from the STEP database at stepdatabase.maths.org/)