IQ tests do not measure all intelligence. They evaluate specific cognitive skills like logical reasoning, pattern recognition, verbal association, and visual-spatial thinking. Practice helps you sharpen these skills. Below, you will find five key question types from real tests, along with their logic and step-by-step solutions.
The goal is not memorization. It is building a habit to spot the underlying rule while reading the question. Try solving each question yourself before looking at the solution.
What question types appear on an IQ test?
Most reliable tests draw questions from various task categories rather than a single field. Our free IQ test uses this same structure, and we explain how scoring works on our methodology page. Here are the five most common types.
1. Number Sequences (Numerical Reasoning)
You need to find the pattern in a sequence and predict the next number. Example:
2 — 5 — 11 — 23 — ?
Looking only at differences between numbers is not enough; look for the rule itself. Here, each number is one more than twice the previous number: 2×2+1=5, 5×2+1=11, 11×2+1=23. Therefore, the answer is 23×2+1 = 47.
These questions get easier as your speed improves. You can boost your mental math skills with our Speed Math game.
2. Pattern and Square Relationships
You need to spot the mathematical pattern behind the numbers. Example:
1 — 4 — 9 — 16 — ?
This sequence shows squares of consecutive numbers: 1², 2², 3², 4²… Next is 5² = 25. If a sequence looks irregular at first glance, check for familiar patterns like squares, cubes, or multiplication tables.
3. Verbal Analogies
You find the relationship between two words and apply it to another pair. Example:
Eye : See :: Ear : ?
The link is clear: the eye is the organ used to see. Following that same logic, the ear is used to hear. The key to verbal analogies is forming a clear sentence: "X is used for Y." Expanding your vocabulary helps directly here, and our Word Puzzle game is designed for this practice.
4. Logical Deduction
You evaluate whether a specific conclusion definitely follows from given premises. Example:
All cats are animals. All animals are living beings. Therefore, all cats are…?
When the chain of logic is clear, the conclusion is straightforward: all cats are living beings. Be careful: a premise like "Some flowers are red" only guarantees that "Some red things are flowers." The most common mistake here is assuming information not stated in the premises.
5. Attention and Processing Speed
This type measures focus and visual scanning speed rather than complex reasoning. A classic example is the Schulte table, where you find scrambled numbers starting from 1 as fast as possible. Efficiency in visual scanning matters most here.
If you want to train this skill directly, our Schulte Table and our working memory Memory Card game are great places to start.
4 useful tips when solving practice questions
- Define the pattern first. Stating a simple rule like "doubles each time," "squaring numbers," or "X is used for Y" gets you halfway to the solution.
- Work against the clock, but stay calm. Time pressure damages focus. If you get stuck on a question, skip it and come back later.
- Eliminate wrong answers. On multiple-choice questions, eliminating wrong options is often faster than calculating the right answer directly.
- Practice consistently. Short, regular practice sessions build lasting skills better than single, long study sessions.
Test yourself on a full test now
Examples teach you the logic, but a timed, varied, and scored test gives an accurate result. You can take our free 28-question IQ test covering all five types without registering and see your score instantly. Check out our brain games for more practice—playing regularly is an enjoyable way to keep your mind sharp.