1QUESTION 1 OF 3
Answer & explanation
The official answer, with Fermi’s reasoning step by step.
Answer & explanation
Official answer
16,557
times
How to estimate it
Fermi’s official “Napkin math”
Seven books, maybe 500 pages each. How often does Harry's name show up on a page? He's in almost every scene, so maybe 5 times.
- Books
- 7
- Pages per book
- × 500
- Harry per page
- × 5
- 7 × 500 × 5
- ≈ 17,500
Rounded assumptions may give a slightly different estimate. The official answer above is the game’s reference value.
Source calculation & reference
- Word 'harry' across all seven books (tidytext word count)
- 16,557
- Most in Order of the Phoenix
- 3,730
- Least in Philosopher's Stone
- 1,213
- Series total
- 16,557
Reference cited by Fermi: UC Business Analytics R Programming Guide (University of Cincinnati), word-frequency analysis of the full text of all seven books: 'harry' appears 16,557 times
How close was your guess?
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Compare by ratio: divide the larger number by the smaller one. The closer to 1×, the better.