Extentor Sample Exam (never used) Jan 2021 problem 4 figure corrected. (Jan 2021) Solution to exam Jan2021 Jan 2020 Jan 2018 Apr 2018 Jan 2019 Aug 19 Shorter format for maximum grade 3. Apr 20. Shorter take-home exam for maximum grade 3 due to covid Solution 1 Solution 2 Solution 3