Day 5 Puzzle: click here
Cracked the code and know what's Mrs Chan's favourite pie? Let us know here!
The fastest 3 people to submit the correct answer will win a prize!
Locations of QR Codes for Days 1-4
Day 1: Good News Cafe
Day 2: Mirrors
Day 3: Big Staircase in between Levels 3 and 4 at Block C
Day 4: ISH
Brought to you by: The Mathematics Department