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Topic Difficulty

Hard Combinatorics OA Questions

Practice 54+ hard Combinatorics coding questions from real online assessments. Filter by company, solve in the OAHelper editor, and prepare for company-wise OAs.

All Combinatorics easy medium

Colorful Constructionalgo universityHard Power of ArraybnyHard Student ArrangementciscoHard Count Tree PathsgameskraftHard Minimum Sumadobe

Hard

Product Dependency TreeintuitHard

Product Dependency TreeintuitHard

K-special numbersuidaiHard

Count of Non-Consecutive ArrangementssiemensHard

Beautiful stringsinfosysHard

Infection SequencesamazonHard

Tech Club Committee FormationmyntraHard

Count Digit Oneamerican expressHard

Tricky subarraysgoogleHard

Tricky SubarraysgoogleHard

Numbers Formation:zomatoHard

Count Digit OneamexHard

Distinct waysnetcoreHard

Palindromic Subsequences of Length 5publicis sapientHard

The coin problemhilabsHard

Numbers and cardsdevrevHard

Card Selection CombinatoricsrapidoHard

Count Grid Coloring PatternsnaviHard

Storage Pair Matchingrubrik 4octHard

Gambler's DicesprinklrHard

Infection SequencesoracleHard

Count Strings with Specific Longest Common Subsequence LengthmyntraHard

Infection SequencesoracleHard

Black and white treeboltearthHard

Count Good ArraysuipathHard

Omega Primesmedianet 5sepHard

Count Palindromic Subsequences of Length 5microsoftHard

Infection SequencesoracleHard

61. DSA: Fault Detection in Automotive FirmwareinfoedgeHard

Infection Sequences CountatlassianHard

Cost of G-Good Setsinfosys 12julyHard

Permutaria Royal DanceinfosysHard

Sum of Beauty of Increasing SubsequencesinfosysHard

Forbidden ArrangementsinfosysHard

Count Valid ArraystrilogyHard

Cost of Lineupsde shawHard

Royal Game MasteradobeHard

Number of sequencesgoogleHard

Palindrome specialgoogleHard

Question 2infosysHard

Perfect Team LineupsdeshawHard

Choose Two Equal SubsetsinfosysHard

Fancy Tower ProblemmyntraHard

Permutation Transformation ProblemmyntraHard

Winter Break GameplacewitHard

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Hard Combinatorics OA Questions | OAHelper