Priors Play free

Next in the sequence

A list of numbers follows a rule. Spot it and type the next one. As many as you can in 60 seconds, each one scored the moment you answer.

Next in the sequence · 60 seconds · free, adapts to you

How it works

  1. Each round shows a sequence of whole numbers. Type the next term and press Enter.
  2. A right answer scores 10. A wrong one or a skip costs only time.
  3. Sequences get harder as you improve: from steady steps to growing steps, primes and two rules at once.

It trains spotting patterns fast. After every round you see the best answer and why.

Play next in the sequence

Play with friends or a club

Challenge a friend with a duel link, or run a tournament for a club or class: one link, the same rounds for everyone, one run each, and a live leaderboard.

Also try Guess the correlation, or the probability puzzles.