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OAHelper - Real Online Assessment (OA) Questions from 700+ Tech Companies

Practice real online assessment questions from Google, Amazon, Microsoft, and 700+ companies. Get detailed solutions, real question images, and company-specific interview insights. Read interview experiences, company-wise placement data, salaries (CTC), and hiring trends.

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Real OA questions. Real patterns. Real results. Stop guessing and start preparing smart with the ultimate campus placement companion.

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42 QuestionsOnline Assessment
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01
Real OA question: Find the Maximum Score After Applying Operations
REAL OA
Find the Maximum Score After Applying Operations
ArraysDPGreedy
02
Real OA question: Shortest Path in Grid with Obstacles
REAL OA
Shortest Path in Grid with Obstacles
BFSGraphs
03
Real OA question: Count Subarrays With Score Less Than K
REAL OA
Count Subarrays With Score Less Than K
Sliding WindowPrefix Sum
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Real OA question: Minimum Cost to Connect All Nodes
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REAL OA
Minimum Cost to Connect All Nodes
GraphsMST
PREMIUM
🔒
Real OA question: Optimal Partition of String
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REAL OA
Optimal Partition of String
StringsHash Map
PREMIUM
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Real OA question: Matrix Chain Multiplication Variant
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REAL OA
Matrix Chain Multiplication Variant
DPMath
PREMIUM
🔒
Real OA question: Design an In-Memory File System
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REAL OA
Design an In-Memory File System
DesignTrees
PREMIUM
🔒
Real OA question: Stock Buy Sell with Cooldown
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REAL OA
Stock Buy Sell with Cooldown
DPGreedy
PREMIUM
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