Intellectual Olympiad in Algebra - 2026 ongoing

Subject: Algebra
Level: V
Category: student
Quiz questions: in English
Example question: Which interval notation describes the solution set of x² − 4x − 5 ≥ 0? (−1, 5), (−∞, −1] ∪ [5, ∞), [−1, 5], (−∞, 5] ∪ [−1, ∞)