How this IQ test works
The quiz has 20 puzzles of the kind used in many reasoning tests: number sequences, letter patterns, analogies, odd one out and short logic problems. Pick an answer and the next question appears straight away. You can go back if you change your mind. There is no time limit, but the clock shows how long you took.
When you finish, you get your score out of 20, a rough IQ style range and the correct answer with an explanation for every question, so you can see exactly where you went wrong.
What your score means
| Score | Estimated range |
|---|---|
| 0 to 6 | Below 90 |
| 7 to 10 | 90 to 100 |
| 11 to 14 | 100 to 115 |
| 15 to 17 | 115 to 130 |
| 18 to 20 | 130 and above |
IQ scores are designed so that the average is 100, and about two thirds of people score between 85 and 115. Our ranges are a rough, friendly guide for this particular puzzle set. They are not a measured IQ.
How to get better at reasoning puzzles
- Look for the gaps. In number sequences, write down the difference between each pair. Patterns often hide in the gaps.
- Number the alphabet. For letter series, A = 1, B = 2 and so on turns letters into a number pattern.
- Read logic questions twice. Words like "some" and "all" change the answer completely.
- Watch for trick questions. The first answer that pops into your head is not always right.
Looking for another challenge? See how fast your fingers are with the typing speed test.
