Pattern recognition
Identify useful relationships between consecutive terms without overfitting the first pattern you notice.
Optiver NumberLogic Assessment Tool
← BackAuthentic Test Mode
In the sequences test, you are presented with a series of numbers and must identify the underlying pattern to determine the next number in the sequence. You have 26 sequence questions ranging in difficulty to answer in 25 minutes.
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Easy Test Mode
Easy Mode simulates a lower difficulty level, where you have 8 straightforward sequence questions to answer within 7 minutes.
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Medium Test Mode
Medium Mode simulates a moderate level of difficulty, with 8 medium sequence questions to be answered within 7 minutes.
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Hard Test Mode
Hard Mode simulates a challenging level of difficulty, where you face 11 tough sequence questions to be answered within 10 minutes.
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About the assessment
About the Optiver NumberLogic assessment
Optiver NumberLogic is a numerical-sequence assessment in which you infer the rule behind a series and choose the next value. The full practice mode on this page contains 26 questions in 25 minutes, with the sequences increasing in difficulty and abstractness.
The useful skill is not memorising a catalogue of patterns. Strong performance comes from testing simple transformations first, recognising when several operations are interacting, and abandoning an unproductive hypothesis quickly. The Easy, Medium and Hard modes let you train that progression before returning to the full test.
Questions
26
Time
25 minutes
Format
Number sequences
Difficulty
Progressive / abstract
EverythingQuant is an independent preparation platform. This practice tool is not an official Optiver assessment and does not guarantee an interview outcome.
What you are training
Skills this practice is designed to build
Arithmetic flexibility
Move comfortably between differences, ratios, alternating rules and multi-step transformations.
Hypothesis testing
Check a candidate rule against the entire sequence before committing to an answer.
Time allocation
Know when to move on from an opaque sequence and protect time for solvable questions.
How to prepare
Use the tool deliberately
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1
Start with Easy Mode
Make the common sequence families automatic before introducing highly abstract patterns.
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2
Describe the rule explicitly
After solving a sequence, state the transformation in words. This exposes lucky guesses and weak reasoning.
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3
Move through Medium and Hard
Increase difficulty only when simple patterns are consistently fast and accurate.
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4
Finish with the 26-question mode
Use the full test to practise pacing across a sequence set that becomes harder over time.
Keep preparing
Continue your Optiver preparation
Optiver preparation hub
Connect NumberLogic practice with the rest of your Optiver preparation.
Optiver interview questions
Practise the quantitative and reasoning questions that come after the OA stage.
Optiver trader interview guide
Understand the wider Optiver process and how the online assessments fit into it.
FAQ
Optiver NumberLogic questions
What is the Optiver NumberLogic assessment?
It is a numerical-sequence test. On this page, the full practice mode presents 26 sequence questions to solve in 25 minutes.
What kinds of sequences should I practise?
Practise straightforward arithmetic relationships first, then alternating and multi-step rules, prime/Fibonacci-style structures and more abstract combinations.
How should I use the difficulty modes?
Use Easy Mode to remove basic pattern-recognition errors, Medium Mode for mixed reasoning, Hard Mode for abstract sequences, then validate your pacing in the full test.
Is this an official Optiver NumberLogic test?
No. EverythingQuant is independent of Optiver. The tool is a preparation resource designed around the numerical-sequence format described here.