Hard SOF International Mathematics Olympiad (IMO) · IMO Level 1 · . Sample A bus travels 45 km in 1.5 hours. Speed is: A 20 km/h B 25 km/h C 30 km/h D 35 km/h Submit Answer Show Explanation Mark as Completed Mark as Important Mark for Review
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
The midpoint of the line segment joining A(2, −3) and B(x, y) is M(5, 1). Find the coordinates of B. SOF International Mathematics Olympiad (IMO) . Medium · Mathematics · 2026 See Explanation
A shopkeeper marks a watch at ₹1,000 and allows a 10% discount. Even after the discount he earns a profit of 20% on the cost price. Find the cost price of the watch. SOF International Mathematics Olympiad (IMO) . Hard · Mathematics · 2026 See Explanation