V5 Games
Find the rule, then the next number.
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Free logical reasoning test. Work out the rule behind a number sequence and pick the next term, with the answer and the full derivation shown immediately after every item.
Click a choice or press 1 to 4. The answer and the working appear immediately, and Enter moves to the next item.
Ten items a day drawn from eight rule families, and the derivation is shown after every answer, so a miss teaches you the pattern you did not see.
Take the differences first: a constant difference is arithmetic, a constant ratio is geometric, and a difference row that is itself arithmetic means the sequence is quadratic. Check any rule on two steps before you commit.