Day 1 · Probability¶
Four probability questions from my Quant interview self-study notes. The focus is on symmetry, counting, and expectation.
Questions¶
| Question | Difficulty | Attempts | Latest attempt | Edited by |
|---|---|---|---|---|
| 1. Even Before Odd | Easy | 1 | October 22, 2026 | Sophia |
| 2. Race to Ace | Medium | 1 | October 22, 2026 | Charles |
| 3. Highest Roll EV | Medium | 1 | October 22, 2026 | Sophia |
| 4. Dot Placement | Easy | 1 | October 22, 2026 | Charles |
Ideas to revisit¶
- Even Before Odd: the order of first appearances and symmetry.
- Race to Ace: gaps, symmetry, and linearity of expectation.
- Highest Roll EV: relative arrival order and the distribution of a maximum.
- Dot Placement: sequential probability and counting distinct choices.
These pages retain the solutions and study records from the Notion export. The mastery symbol is preserved as recorded, without assigning it a new meaning.