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One number in the sequence doesn't fit — can you spot it? 10 questions, 15 seconds each.
Difficulty ramps up. Think logically!
Logic Sequences shows you a row of numbers where one of them does not fit the pattern, and you have to spot the odd one out. Each round has 10 questions, each giving you 15 seconds to find the number that breaks the rule. The sequence follows one clear rule, and exactly one number refuses to obey it.
The odd number fails the pattern in three ways: it might be out of order, sitting where a different value belongs; it might have the wrong step size, jumping further than the rest of the line allows; or it might be the only number that breaks a repeating block. You earn points per correct pick.
A wrong pick or a 15-second timeout reveals the answer before the game moves on. Difficulty ramps as you go, so later questions demand sharper observation. Tap targets handle mobile and mouse clicks handle desktop, so the challenge stays in the sequences, never in fiddly controls.
Suppose the sequence is 2, 4, 6, 8, 12, 14, 16. The early steps are all 2: 2 to 4, 4 to 6, 6 to 8 — then 12 arrives, a jump of 4, before 14 and 16 resume steps of 2. The rule is clearly "add 2 each time", so 12 is out of place; it should have been a 10. That is the wrong step size, and tapping 12 earns the points.
A later example plays with order. Faced with 5, 10, 15, 25, 20, 30, 35, the line counts up in fives, but 25 lands before 20. Both numbers belong; 25 breaks it because it is out of order. Read the whole line before you pick.
There are no named difficulty tiers; the ramp is built into the round. The first questions use simple step patterns where the odd number is plainly out of line; later, sequences get longer, steps more varied, and all three failure types can appear in one round.
The 15-second clock stays the same on every question, so harder questions squeeze the same time budget — later sequences demand a faster read of the whole line, not more seconds. The sibling game Number Sequences tests the same instinct from the other direction, asking you to continue a sequence instead of finding the intruder.
The classic mistake is pouncing on the first number that looks odd without checking the rest of the line — a value that seems out of place early can turn out to be perfectly fine. Another frequent error is confusing the failure types: treating an out-of-order number as a wrong step leads you to the wrong culprit.
Repeating blocks cause their own slip-ups: players miscount the cycle and flag the wrong digit, especially on long sequences. Time pressure adds a different error — spending the whole 15 seconds double-checking and getting timed out with the answer still hidden. One subtle edge case: on rare sequences two numbers look wrong at first glance, but only one actually breaks the rule.
Each round holds 10 questions, and the difficulty rises as you work through them.
You get 15 seconds per sequence, identical on every question, easy or hard.
A timeout reveals the correct answer so you can see what you missed, then the game moves on without points for that pick.
You earn points per correct pick. Wrong picks and timeouts give nothing, so read the full sequence before tapping.
Yes. The answer targets are sized for tapping on mobile and still work cleanly with a mouse on desktop.
Yes — every sequence is built so exactly one number breaks the rule. The trick is finding it before the clock runs down.