Medium SOF International Mathematics Olympiad (IMO) · IMO Level 1 · . Sample A square and a rectangle both have perimeter 40 cm. If the rectangle is 12 cm long, its breadth is: A 6 cm B 8 cm C 10 cm D 12 cm Submit Answer Show Explanation Mark as Completed Mark as Important Mark for Review
Fill in the blank: The ratio of boys to girls in a class is 4 : 5. If the class has 36 students in all, the number of girls is ______. SOF International Mathematics Olympiad (IMO) . Medium · Mathematics · 2026 See Explanation
Two fair dice are thrown together. What is the probability that the sum of the numbers on the top faces is 8? SOF International Mathematics Olympiad (IMO) . Medium · Mathematics · 2026 See Explanation
In the system 2x + 3y = 12 and 4x − 3y = 6, which variable is eliminated by simply adding the two equations, and what is the solution? SOF International Mathematics Olympiad (IMO) . Medium · Mathematics · 2026 See Explanation
Two concentric circles have radii 5 cm and 3 cm. A chord of the larger circle touches the smaller circle. Find the length of the chord. SOF International Mathematics Olympiad (IMO) . Hard · Mathematics · 2026 See Explanation
Consider the data: 3, 5, 7, 5, 9, 5, 11, 7. I. The mode is 5. II. The median is 6. III. The mean is 7. Which of the statements are correct? SOF International Mathematics Olympiad (IMO) . Medium · Mathematics · 2026 See Explanation