Practice problems across 75+ categories
Practice problems frequently asked at Math • 596 problems | 150 Easy | 283 Medium | 161 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 46 | Cat and Mouse | Hard | MathDynamic ProgrammingGraph |
| 47 | Cat and Mouse II | Hard | ArrayMathDynamic Programming |
| 48 | Categorize Box According to Criteria | Easy | Math |
| 49 | Cells with Odd Values in a Matrix | Easy | ArrayMathSimulation |
| 50 | Chalkboard XOR Game | Hard | ArrayMathBit Manipulation |
| 51 | Check if Any Element Has Prime Frequency | Easy | ArrayHash TableMath |
| 52 | Check If Digits Are Equal in String After Operations I | Easy | MathStringSimulation |
| 53 | Check If Digits Are Equal in String After Operations II | Hard | MathStringCombinatorics |
| 54 | Check If It Is a Good Array | Hard | ArrayMathNumber Theory |
| 55 | Check If It Is a Straight Line | Easy | ArrayMathGeometry |
| 56 | Check if Number is a Sum of Powers of Three | Medium | Math |
| 57 | Check if Point Is Reachable | Hard | MathNumber Theory |
| 58 | Check if The Number is Fascinating | Easy | Hash TableMath |
| 59 | Check if the Rectangle Corner Is Reachable | Hard | ArrayMathDepth-First Search |
| 60 | Check if Two Chessboard Squares Have the Same Color | Easy | MathString |
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