Practice problems across 75+ categories
Practice problems frequently asked at Math • 596 problems | 150 Easy | 283 Medium | 161 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 61 | Circle and Rectangle Overlapping | Hard | MathGeometry |
| 62 | Circular Permutation in Binary Representation | Medium | MathBacktrackingBit Manipulation |
| 63 | Climbing Stairs | Easy | MathDynamic ProgrammingMemoization |
| 64 | Closest Divisors | Medium | Math |
| 65 | Closest Fair Integer | Medium | MathEnumeration |
| 66 | Closest Prime Numbers in Range | Medium | MathNumber Theory |
| 67 | Clumsy Factorial | Medium | MathStackSimulation |
| 68 | Color the Triangle Red | Hard | ArrayMath |
| 69 | Complex Number Multiplication | Medium | MathStringSimulation |
| 70 | Concatenation of Consecutive Binary Numbers | Medium | MathBit ManipulationSimulation |
| 71 | Confusing Number | Easy | Math |
| 72 | Confusing Number II | Hard | MathBacktracking |
| 73 | Consecutive Numbers Sum | Hard | MathEnumeration |
| 74 | Construct the Longest New String | Medium | MathDynamic ProgrammingGreedy |
| 75 | Construct the Rectangle | Easy | Math |
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