Sequence Sprint - number sequence practice

Find the rule and type the next number - freshly generated arithmetic, geometric, square, alternating, and Fibonacci-style sequences.

Each round shows a short number sequence with a question mark at the end. Type the next number and press Check; the game reveals whether you were right, shows the correct answer and the rule in plain words, and a Next sequence button deals a fresh round. There is no timer and no round limit - it is an open-ended rep machine.

Every sequence is generated fresh from one of five pattern families: arithmetic (a constant step, which can be negative), geometric (multiply by 2 or 3 each time), consecutive squares, alternating (add one amount, subtract another, repeating), and Fibonacci-style (each term is the sum of the previous two, from two random small seeds).

The HUD tracks three numbers as you play: SOLVED (total rounds attempted), SCORE (correct answers), and STREAK (consecutive correct, reset by a miss).

Why quant interviews test this

Next-number sequences appear throughout quantitative aptitude screens and trading-firm assessments because they compress two testable skills into seconds: hypothesis generation (which family?) and verification (does the rule fit every term?). The difference-first method is the same discipline as fitting a model - look at the increments before the levels.

Interview versions escalate to second differences and mixed rules, but the taxonomy habit transfers directly: candidates who classify before calculating are consistently faster and calmer on pattern sections than those who pattern-match by intuition.

The Sequence Sprint guide covers how scoring works, the strategy that wins, a worked example and the mistakes most players make.

More Drills games

• Arithmetic Drill - A 20-card flashcard race across twelve arithmetic categories - play solo or race a ghost recording of a real past run.
• Fermi Estimation (Classic) - Quote a low-high range on ten real-world estimation questions - points for containing the truth, more points for a tight range.
• Duck Duck Dash - An endless runner through a sunny field where the only way to hop is answering a mental-math question - one collision ends the run.
• Likelihood Ranking - Order outcomes from most to least likely - student score tables, distributions, dice and card events, Poisson arrivals, urns, and scatter plots.
• Crossroad Multitasker - A duck at a 4-way crossroad and four corner math pods - answer whichever question is live as it switches unpredictably between the two streams.
• All Drills practice
• Every game guide