Number Sequences: what comes next?

How to play Number Sequences

1. Choose a level from simple adding up to mixed expert patterns.
2. Look at the numbers and find the rule that connects them.
3. Type the next number and press Enter or Check. You get two tries.
4. Press Gaps if you want a clue: it shows the difference between each pair of neighbours.
5. After every pattern you see the rule explained, so you learn it even when you get it wrong.

Tips and strategy

• Always check the differences first. If they are all the same, you have an adding or subtracting pattern.
• If the differences grow steadily (+2, +3, +4), you have triangular numbers. If they double, look for powers of 2.
• If each number is the same multiple of the one before it, multiply by that number.
• Numbers that grow fast but not by a fixed ratio might be squares (1, 4, 9, 16) or cubes (1, 8, 27, 64).
• If the pattern looks odd, try looking at every second number.