Practice problems across 75+ categories
Practice problems frequently asked at Math • 596 problems | 150 Easy | 283 Medium | 161 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 166 | Encode Number | Medium | MathStringBit Manipulation |
| 167 | Equal Rational Numbers | Hard | MathString |
| 168 | Erect the Fence | Hard | ArrayMathGeometry |
| 169 | Erect the Fence II | Hard | ArrayMathGeometry |
| 170 | Escape The Ghosts | Medium | ArrayMath |
| 171 | Evaluate Reverse Polish Notation | Medium | ArrayMathStack |
| 172 | Excel Sheet Column Number | Easy | MathString |
| 173 | Excel Sheet Column Title | Easy | MathString |
| 174 | Expression Add Operators | Hard | MathStringBacktracking |
| 175 | Factorial Trailing Zeroes | Medium | Math |
| 176 | Fancy Sequence | Hard | MathDesignSegment Tree |
| 177 | Fibonacci Number | Easy | MathDynamic ProgrammingRecursion |
| 178 | Final Array State After K Multiplication Operations I | Easy | ArrayMathHeap (Priority Queue) |
| 179 | Find Closest Person | Easy | Math |
| 180 | Find Greatest Common Divisor of Array | Easy | ArrayMathNumber Theory |
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