Free IQ test questions with answers and explanations.
Looking for IQ test questions with answers? Try 10 original examples covering patterns, number sequences, analogies, spatial reasoning, and logic. Every answer explains the rule—not just the correct option.
What you get: original questions, step-by-step answers, and practical strategies for the formats people encounter in free online IQ test practice.
What people usually mean by IQ test questions
In everyday search and conversation, people often use the phrase for compact problems involving patterns, relationships, rules, or mental manipulation. A prompt might ask what comes next, which figure is the odd one out, how two words relate, or what must be true after a few facts are combined.
Those formats require reasoning skills, but the question alone does not determine what a score means. Interpretation depends on the complete assessment: how items were designed, how instructions and time limits were controlled, who took the test during standardization, how scores were normed, and whether reliability and validity were established for the intended use.
Question format and score meaning are different things
Two products can both contain matrix puzzles or number sequences while supporting very different conclusions. One may be a casual practice set; another may be part of a carefully administered professional assessment. Familiar-looking items are not enough to make those products equivalent. Treat online questions as reasoning practice unless the publisher supplies credible evidence for a stronger claim.
Common types of IQ test questions
The categories overlap, but naming the main move helps you choose a method instead of guessing from first impressions.
Pattern
Find the attribute that changes across a sequence or grid: shape, count, position, shading, direction, or a combination. Check rows and columns independently before choosing a rule.
Spatial
Mentally rotate, fold, reflect, or assemble an object. Track one distinctive corner or mark through the movement instead of trying to hold the entire figure at once.
Number
Identify a numerical relationship such as changing differences, alternating operations, ratios, or paired sequences. Write the gaps between terms before reaching for a complicated formula.
Word & analogy
Complete the same relationship on both sides: tool and purpose, part and whole, cause and effect, degree, or category. State the relationship as a short sentence first.
Logic
Decide what follows from the facts provided, even when those facts use invented categories. Separate “must be true” from “could be true” and avoid importing outside assumptions.
Memory & focus
Hold, update, or filter information for a short period. Accuracy depends on attention and conditions as well as strategy, so fatigue and interruptions can matter more here.
10 IQ test questions with answers and step-by-step explanations
Try each free IQ test practice question before opening the answer. These examples teach the formats; they do not calculate an IQ score.
1. Pattern matrix IQ test question
Which shape completes the grid?
Show answer and explanation
B: Square. Each row and column contains each of the three shapes exactly once. The third row already has a triangle and circle, so it needs a square.
2. Number sequence IQ test question
What comes next?
2, 6, 12, 20, ?
Show answer and explanation
C: 30. The differences are +4, +6, and +8. Continuing with +10 gives 30. Looking at the gaps makes the rule easier to see.
3. Word analogy IQ test question
Compass is to direction as thermometer is to…
Show answer and explanation
B: Temperature. A compass indicates direction; a thermometer indicates temperature. “Instrument and what it indicates” is the repeated relationship.
4. Spatial rotation IQ test question
An arrow points northeast. Rotate it 90° clockwise. Which way does it point?
Show answer and explanation
B: Southeast. A quarter-turn clockwise moves northeast through east to southeast. Following the arrowhead is simpler than rotating an imagined page.
5. Deductive logic IQ test question
Every neral is blue. No blue object is wooden. Can any neral be wooden?
Show answer and explanation
B: No. All nerals belong to the blue group, and the blue group excludes wooden objects. The invented word helps keep outside knowledge from changing the stated logic.
6. Letter sequence IQ test question
What letter comes next?
B, E, I, N, ?
Show answer and explanation
C: T. The jumps grow by one letter each time: +3 from B to E, +4 to I, and +5 to N. A final jump of +6 lands on T.
7. Number analogy IQ test question
Complete the same rule:
3 → 12, 5 → 30, 7 → ?
Show answer and explanation
D: 56. Each input is multiplied by the next whole number: 3 × 4 = 12 and 5 × 6 = 30. Applying the same rule gives 7 × 8 = 56.
8. Verbal classification IQ test question
Which word does not belong?
Show answer and explanation
C: Liter. Inch, meter, and kilometer measure length. A liter measures volume, so it belongs to a different measurement category.
9. Comparative logic IQ test question
Mira runs faster than Leo. Leo runs faster than Ana. Who must be slower than Mira?
Show answer and explanation
C: Both Leo and Ana. Mira is faster than Leo directly. Because Leo is faster than Ana, Mira must also be faster than Ana through the same ordering chain.
10. Spatial reflection IQ test question
An arrow points northwest. Reflect it across a vertical mirror. Which way does it point?
Show answer and explanation
A: Northeast. A vertical reflection swaps left and right while preserving up and down. Northwest therefore becomes northeast.
How to practice for an IQ test
Speed matters in some formats, but early practice should make your reasoning more visible.
- Name the task first. Ask whether the prompt is about a sequence, transformation, relationship, or deduction. That small classification narrows the search.
- Work untimed before working fast. Learn a repeatable method, then introduce a gentle time limit. Rushing before you have a method mostly rehearses guessing.
- Explain every answer. After each item, state why the correct option fits and why the nearest distractor does not. An explanation exposes accidental wins.
- Mix formats. Blocks of one question type build technique; mixed sets build the harder skill of recognizing which technique applies.
- Track categories, not identity. Record patterns such as “missed reflections” or “rushed the final condition.” Do not turn one session into a claim about fixed ability.
- Respect conditions. Use a readable screen, reduce interruptions, and pause when tired. Memory and focus questions are especially sensitive to the testing environment.
Frequently asked questions about IQ tests
Where can I find free IQ test questions with answers?
This page includes 10 original practice questions with answers and explanations across patterns, number and letter sequences, analogies, spatial reasoning, classification, and logic. Each explanation shows the rule so you can reuse the method on a new question.
Is this a free online IQ test?
It is free online IQ test practice with worked answers, not a browser-based assessment that calculates an IQ score. Percentile’s iPhone and iPad app starts with a free 16-question reasoning baseline and continues with daily practice and challenges.
Are all IQ test questions the same?
No. The everyday label covers many formats, and assessments differ in item selection, instructions, timing, scoring, standardization, and intended use. Similar-looking puzzles do not guarantee comparable scores.
Does practicing these questions raise IQ?
This guide makes no such claim. Practice can improve familiarity with a format, the strategy you use, and sometimes your pace. A higher practiced score does not by itself establish a change in general intelligence.
Should I practice with a timer?
Learn the method untimed first. Add time only after you can explain the rule and reject the distractors. If a formal assessment is ahead, follow the professional’s instructions rather than rehearsing protected test content.
Is Percentile a standardized IQ test?
No. Percentile reports a modelled Reasoning Index with a 90% range. It is not a standardized, clinical, professionally administered, or population-normed IQ test, and its results are not for high-stakes decisions.
How standardized IQ testing is evaluated
These primary sources explain why administration, norming, validity evidence, and intended score use matter beyond the surface format of a question.
- American Psychological Association: Understanding psychological testing and assessment — an overview of formal tests, broader assessment, standardization, and professional interpretation.
- Standards for Educational and Psychological Testing — guidance published jointly by the American Educational Research Association, American Psychological Association, and National Council on Measurement in Education.
Try free IQ test practice in Percentile
Percentile includes original reasoning challenges across pattern, spatial, number, word, logic, memory, focus, flexibility, machines, upper-band, and hand-solved board collections. Its current result is a modelled Reasoning Index shown with a 90% range. It is not an IQ score or standardized population percentile, and Percentile is not a clinical, professionally administered, or population-normed IQ test. No result should be used for school, employment, insurance, credit, health, legal, or other high-stakes decisions.
If your goal is thoughtful puzzle practice, start with the interactive sample or explore the product overview. If you need an evaluation for a medical, educational, or legal purpose, use an appropriately qualified professional rather than an app.