Classroom 7A is a classroom where Arithmancy classes are taught at Hogwarts School of Witchcraft and Wizardry. It is located off of the Serpentine Corridor on the third-floor of Hogwarts Castle, next-door to Classroom 3C and around the corner from a corridor where the staffroom sometimes exists. It includes number charts, a blackboard and rows of tables for students to sit in.
Behind the scenes
- In the Game Boy Color version of the video game adaptation of Harry Potter and the Philosopher's Stone, two equations are seen written on the blackboard: 2 + xy = 16 and xy = 14.
This system of equations has infinite rational solutions and 4 solutions in natural numbers: (1,14), (2,7), (7,2) and (14,1).
- Harry Potter and the Philosopher's Stone (video game) (First appearance)
- Harry Potter and the Chamber of Secrets (video game)
Notes and references
|Professors: Septima Vector|
|Known Arithmancers: Bridget Wenlock|
|Textbooks: Numerology and Grammatica · New Theory of Numerology|
|Arithmancy at Hogwarts: Arithmancy (class) · Classroom 7A · Advanced Arithmancy Studies|