Number Sequences

Practice number sequences: spot the rule behind a series of numbers and find the next term. Free numerical-reasoning practice with adjustable difficulty levels.

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Explanation

 
How It Works
Practice your numerical reasoning skills with our number sequence questions. Each puzzle presents a series of numbers following a specific rule — your task is to identify the pattern and determine the next number in the sequence.
This format is commonly used in aptitude tests for employment and graduate programs. Our procedurally generated questions use only inferable patterns (no prior mathematical knowledge required), ensuring fair and unlimited practice opportunities.
All sequences are generated locally in your browser. Your progress and answers are stored only on your device — we never collect any personal data.
Number sequence questions assess your ability to identify patterns in series of numbers. You're given a sequence like '2, 4, 6, 8, ?' and must determine the rule (adding 2) to find the next number (10). These questions test logical reasoning and are widely used in employment aptitude tests.
Mostly no — but at harder difficulties you may encounter named sequences such as Fibonacci-like (each term = sum of the previous two), primes, squares, cubes, triangular numbers, factorials, and digit-sum patterns. Easy and most medium puzzles use only basic arithmetic progressions. If you don't know a named sequence, you can still solve most puzzles by looking for differences, ratios, or alternating steps between consecutive terms.
Patterns include: constant differences (+3, +3, +3), constant ratios (×2, ×2, ×2), increasing differences (+1, +2, +3), alternating operations (+5, -2, +5, -2), two interleaved sequences, and compound rules. All patterns can be discovered by examining the sequence — no prior knowledge required.
Commonly Used In
Number Sequences skills are frequently assessed in recruitment and professional development across a range of industries and roles. Practicing these question types will help you prepare for aptitude tests from providers like SHL, Korn Ferry, Cubiks, and Talent Q.
IQ TestsTechnical InterviewsProblem Solving Assessments
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Strengthen your preparation by practicing these complementary skill areas. Many aptitude tests combine questions from multiple categories, so cross-training helps you build a well-rounded skill set.
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Draw valid conclusions from logical premises. Practice syllogisms and deductive reasoning for exams and interviews.