Number Patterns
Spot the rule behind each sequence with a free, browser-based logic game. Arithmetic, geometric, square, and Fibonacci patterns included.
Logic & PuzzlesDictionary order compares one letter at a time and stops at the first difference. Below: how to skip whole words in one comparison, and why longer is not later.
Pick a level to start playing. You can switch at any time.
Compare the words letter by letter, then tap the one that comes first.
Tip: your progress and best score are saved in this browser only.
Spot the rule behind each sequence with a free, browser-based logic game. Arithmetic, geometric, square, and Fibonacci patterns included.
Logic & PuzzlesTrain categorical reasoning with a free, browser-based odd-one-out game. Pick the item that breaks the group's shared rule.
Logic & PuzzlesFind the next number in arithmetic, geometric, and square patterns with a free, timed browser game. Includes the checks that rule out a wrong rule.
Logic & PuzzlesPick the prime number from four candidates in a free, timed browser game. Includes the divisibility tests that eliminate composites fast.
Logic & PuzzlesConvert binary to decimal in a free, timed browser game. Includes the place-value row method that never fails.
Logic & PuzzlesSort numbers from smallest to largest in a free, timed browser game. Place value, grouped by digit length, under a countdown.
Logic & PuzzlesFind the missing number that keeps the scale level, in a free timed browser game. One-step equations, built as balance puzzles.
Logic & PuzzlesComplete the pair in a free, timed browser game. Name the relationship, then apply exactly the same one.
Logic & PuzzlesSpot the word that breaks the category in a free, timed browser game. Three share a group; one does not.
Logic & PuzzlesFollow the arrows to find who beats everyone in a free, timed browser game. Three clues, one undisputed winner.
Logic & PuzzlesFind the next letter in a free, timed browser game. Constant steps through the alphabet, forward and backward.
Logic & PuzzlesTwo patterns running at once, in a free timed browser game. Letters move one way, numbers another.
Logic & PuzzlesCount how many numbers in the list are odd, in a free timed browser game. One last digit decides each one.
Logic & PuzzlesFollow a multiplying pattern in a free, timed browser game. 2, 4, 8, 16 — each term is the previous one times a fixed number.
Logic & PuzzlesRead a number backwards in a free, timed browser game. Place value makes this harder than it sounds.
Logic & PuzzlesOne sequence stays still while another climbs, in a free timed browser game. Read every other term to see it.
Logic & PuzzlesRead Roman numerals in a free, timed browser game. Seven letters, one subtraction rule.
Logic & PuzzlesFill the missing cell in a number grid in a free, timed browser game. Every row and every column holds each number once.
Logic & PuzzlesFlip cards and match emoji with their names in this free, timed memory game. Learn fruit, animal, and food words while training your recall.
Logic & PuzzlesDictionary order compares one letter at a time and stops at the first difference. cat before cot is decided entirely by the second letter; nothing after it matters.
That is the whole algorithm, and it is worth being fluent in — alphabetical order indexes glossaries, indexes, contact lists and file names.
You are shown four words and asked which comes first. Pick it; a wrong pick reveals the answer immediately.
Easy uses words with different first letters, where one comparison settles it. Medium uses words that share a first letter. Hard uses words that share the first two letters, where you must go deeper.
Compare left to right, stop at the first difference. apple vs apron: both start ap, then p comes before r, so apple is first.
A prefix comes before the longer word. car comes before cart, because the shorter word runs out first.
Start at the first letter and eliminate fast. If any word starts with a letter earlier than all the others, you are done — the answer is found in one comparison.
When first letters tie, jump to the second. You do not need to read the rest of the word; the first differing position decides everything.
Watch the prefix trap. cart and car look nearly identical, but the shorter one always comes first. Length is not a signal of position.
Sort by "what would the dictionary do". Imagine the word in a dictionary page rather than comparing letters analytically — for most people the mental image is faster than the algorithm.