Logic, find the next number
A series of numbers follows a hidden rule. Spot it and pick the next number among four choices. Six series, from the simplest to the hardest, in one minute at most.
- Inductive reasoning
- Pattern spotting
Play it live
Find the number that continues the series.
Six series, from easy to hard, where you pick the next number among four, in one minute at most.
What it asks of you
Logic asks for inductive reasoning, finding the rule behind a few examples. Adding the same step each time, doubling, two steps in turn, a gap that grows, squares, each number the sum of the two before.
It is the calm game of a fast app. Here thinking pays more than speed, there is no reaction time in the score.
How to play
- A series of four or five numbers appears, then a question mark.
- Find the rule that links them.
- Tap the number that continues the series, among four choices.
- Right or wrong, the answer shows and the next series comes.
- Six series, getting harder. Your score is how many you got right, within one minute.
The research behind it
Number series are a classic of reasoning puzzles. Headgame does not borrow a published test here, so Logic shows no norm and no percentile, only your own progress.
What research does show is that people get quicker at a type of reasoning puzzle when they meet it again, a well documented retest effect (Scharfen et al., 2018a). You learn to see doubling or alternation at a glance, and that sharper eye for rules is exactly what Logic asks of you.
On your weekly card
Logic closes the morning routine. After your three graded games, one Logic round lets you think instead of react.
It never counts on your weekly card. Without a verified norm, the app keeps Logic as practice, with your own best as the reference.
Questions
Is Logic an IQ test?
No. Number series appear in reasoning tests, but six series in a minute measure nothing that broad. Logic is a reasoning game, played for the pleasure of finding the rule.
Does speed matter?
Only through the one minute limit. Your score counts right answers, not time.
What kinds of rules come up?
Constant steps up or down, doubling or tripling, two steps in turn, gaps that grow, squares, and each number as the sum of the two before.
Sources
- Scharfen J., Peters J.M., Holling H. (2018). Retest effects in cognitive ability tests, a meta-analysis. Intelligence 67, 44 to 66. doi.org/10.1016/j.intell.2018.01.003
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