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Coding Topic

Combinatorics OA Questions

Practice 102+ Combinatorics coding questions from real online assessments. Filter by company, solve in the OAHelper editor, and prepare for company-wise OAs.

easy Combinatorics medium Combinatorics hard Combinatorics

QuestionCompanyDifficulty

Question 1linkedinHard Good SequencesamazonHard Count Palindromic Subsequences of Length 5microsoftMedium

Question 1 and Question 2

microsoft

Hard

Question Compilationuser submittedHard

K-Step Bit Decryptionpurplle engineering 24mayEasy

Encryptiontech mahindraHard

Code Question 2amazonMedium

PairsinfosysMedium

DNA SequencingakamaiHard

Process SchedulingcitadelEasy

Colorful Constructionalgo universityHard

Salesforce Pair SumssalesforceEasy

Code Question 2amazonMedium

Keypad DecoderbnyMedium

Power of ArraybnyHard

Waste of TimebnyMedium

Sub-rectangle Counting ProblemflipkartEasy

Substring deletionjoveoMedium

Student ArrangementciscoHard

1. Burst the balloonsepamEasy

Count Tree PathsgameskraftHard

Minimum SumadobeHard

Product Dependency TreeintuitHard

One blockswiggyEasy

K-special numbersuidaiHard

Valid NetworkschrodingerMedium

Count of Non-Consecutive ArrangementssiemensHard

Count Triplets with Bounded DifferenceibmMedium

Beautiful stringsinfosysHard

Fixing a Damaged Palindromic MessageibmEasy

Infection SequencesamazonHard

Counting Divisible by 15 NumberswalmartMedium

Number of Ways to Choose CablesibmEasy

Project LaunchphilipsEasy

Employee of the YearmyntraMedium

Tech Club Committee FormationmyntraHard

Count Digit Oneamerican expressHard

Valid BST PermutationsoracleMedium

Tricky subarraysgoogleHard

GridlandagodaMedium

Tricky SubarraysgoogleHard

Subarray XOR SumcashfreeMedium

The coin problemhilabsMedium

Count Numbers with Same Set BitsmicrosoftEasy

Numbers Formation:zomatoHard

Count Digit OneamexHard

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Combinatorics OA Questions | OAHelper