Number series
Work out the rule and fill the gap in the row
What it looks at
Numerical reasoning: how quickly you find the rule behind a row of numbers and use it. Each row has one intended rule and one right answer, so this game is scored more like a short reasoning test than a behaviour game.
How to play
Each item shows a row of numbers with one missing. Work out the rule, type the missing number and press Enter or Submit. A row can run below zero, but the missing number is always a whole number of zero or more.
There are 20 items and 30 seconds each. The next item comes as soon as you answer, you can’t go back, and an item you run out of time on counts as unanswered.
- EnterSubmit the number
Tap the answer box for a number keypad
This recreates the published format from public descriptions, and the exact settings aren't public
AccessibilityColours, motion, text size
- Colour-blind-safe colours
- Reduce motionFollowing your device setting
- Larger text and shapes