Sequence Rush
Sequence Rush
Deduce the underlying logical rule governing the sequence and select the missing item to replace the [ ? ] marker.
15 inductive reasoning puzzles across arithmetic, alternating, recursive, and alphabetical rule families.
Keyboard hotkeys: Press 1, 2, 3, 4 or A, B, C, D to answer.
Number Series: Inductive Logic & Pattern Extrapolation
Number series completion is one of the classic psychometric subtests used to assess non-verbal fluid intelligence (Gf) and inductive reasoning. The test-taker must infer the implicit transformation rule governing a sequence of elements and deduce the missing successor.
1. Core Sequence Rules
Series involve constant differences, geometric multipliers, alternating dual-interleaved progressions, Fibonacci recursive sums, and two-tier differences (differences between differences).
2. How to Play & Scoring
Examine the displayed sequence, determine the underlying rule, and select the correct option from the 4 choices within the per-item time limit. Build consecutive streaks for score bonuses.
3. Psychometric Grounding
Inductive series completion has been a core pillar of psychometrics since Charles Spearman (1904) and L.L. Thurstone's Primary Mental Abilities (1938), exhibiting exceptionally high correlation with general cognitive factor (g).
Looking for a Full Inductive Reasoning Assessment?
Test your Fluid Reasoning, Visual-Spatial, Quantitative, and Verbal abilities with our 24-question test.