Practice problems across 75+ categories
Practice problems frequently asked at Math • 596 problems | 150 Easy | 283 Medium | 161 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 391 | Number of Common Factors | Easy | MathEnumerationNumber Theory |
| 392 | Number Of Corner Rectangles | Medium | ArrayMathDynamic Programming |
| 393 | Number of Days Between Two Dates | Easy | MathString |
| 394 | Number of Days in a Month | Easy | Math |
| 395 | Number of Different Subsequences GCDs | Hard | ArrayMathCounting |
| 396 | Number of Digit One | Hard | MathDynamic ProgrammingRecursion |
| 397 | Number of Distinct Binary Strings After Applying Operations | Medium | MathString |
| 398 | Number of Good Pairs | Easy | ArrayHash TableMath |
| 399 | Number of Laser Beams in a Bank | Medium | ArrayMathString |
| 400 | Number of Music Playlists | Hard | MathDynamic ProgrammingCombinatorics |
| 401 | Number of Pairs of Interchangeable Rectangles | Medium | ArrayHash TableMath |
| 402 | Number of Self-Divisible Permutations | Medium | ArrayMathDynamic Programming |
| 403 | Number of Sets of K Non-Overlapping Line Segments | Medium | MathDynamic ProgrammingCombinatorics |
| 404 | Number of Single Divisor Triplets | Medium | Math |
| 405 | Number of Smooth Descent Periods of a Stock | Medium | ArrayMathTwo Pointers |
Powerful online tools to boost your productivity
Coding Ground For Developers
Code, Edit, Run and ShareIgnite your coding potential on Coding Ground - an immersive online platform for hands-on learning, collaboration, and skill development.
