Do you consider yourself a logical, analytical or creative person? An IQ test can give you an idea of your cognitive abilities compared to the population average. Although official tests require professional supervision, here is a free version with 20 questions to challenge your mind.
Instructions:
- Only one answer per question.
- Take your time (although if you are fast, all the better).
- Don’t cheat!
1. What is the next number in the series?
2 – 4 – 8 – 16 – ?
a) 18.
b) 20.
c) 32.
d) 30.
Answer: c) 32 (Each number is doubled)
2. Which word does not fit in this list?
Duck – Eagle – Penguin – Bat.
a) Eagle.
b) Bat.
c) Penguin.
d) Duck.
Answer: b) Bat (It is a mammal, the others are birds).
3. If all tulips are flowers and some flowers wilt, can we say that some tulips wilt?
a) Yes.
b) No.
c) Depends.
d) It is not possible to know.
Answer: d) Can’t know (It is not specified if the tulips are in the wilting group).
4. What number completes the series?
1, 1, 2, 3, 5, 8, ?
a) 11.
b) 12.
c) 13.
d) 14.
Answer: c) 13 (Fibonacci Series)
5. What number is missing? 7, 14, 28, 56, ?
a) 70.
b) 84.
c) 112.
d) 98.
Answer: c) 112: It is a series that doubles at each step (x2).
6. If you turn the word “SOL” in a mirror, what will it look like?
a) LOS.
b) SLO.
c) ᄂOS.
d) ⅃OS.
Answer: d) ⅃OS.
7. Which of the following figures does not fit?
🔺 ⚫ 🔷 🟥 🔵
a) 🔺
b) ⚫
c) 🔷
d) 🟥
Answer: a) 🔺 (It is the only figure with 3 sides, the others have more or are circular).
8. What is the antonym of “build”?
a) Elaborate.
b) To break.
c) Destroy.
d) Assemble.
Answer: c) Destroy.
9. Which number is missing?
3, 6, 9, 12, __, 18.
a) 13.
b) 15.
c) 14.
d) 16.
Answer: b) 15 (Series +3)
10. If all dolphins are mammals, and some mammals are aquatic, what can be concluded?
a) All mammals are dolphins.
b) Some dolphins are aquatic.
c) All dolphins are aquatic.
d) Nothing can be concluded with certainty.
Answer: b) Some dolphins are aquatic: Because all dolphins are mammals, and some mammals are aquatic, therefore, some dolphins could be aquatic.
11. If Ana is taller than Laura, and Laura is taller than Marta, who is the shortest?
a) Marta.
b) Laura.
c) Ana.
d) It is not possible to know.
Answer: a) Marta.
12. Which of these words is misspelled?
a) Intelligence.
b) Quotient.
c) Birds.
d) Logic.
Answer: c) Aveses (Correct: “Sometimes”)
13. What number comes next?
2, 4, 8, 14, 22, ?
a) 32.
b) 30.
c) 28.
d) 26.
Answer: a) 32 (Sequence: +2, +4, +6, +8, +10)
14. If a bicycle has 2 wheels, how many wheels have 5 bicycles?
a) 8.
b) 10.
c) 12.
d) 15.
Answer: b) 10.
15. What word is a synonym for “shrewd”?
a) Clumsy.
b) Clever.
c) Shy.
d) Slow.
Answer: b) Clever.
16. How many sides does a heptagon have?
a) 5.
b) 6.
c) 7.
d) 8.
Answer: c) 7.
17. What number is missing?
121, 144, 169, __, 225.
a) 180.
b) 196.
c) 200.
d) 210.
Answer: b) 196 (They are perfect squares: 11², 12², 13², 14², 15²)
18. If today is Tuesday, what day will it be in 10 days?
a) Thursday.
b) Friday.
c) Saturday.
d) Sunday.
Answer: d) Thursday (10 days after Tuesday is Thursday of the following week)
19. Which option completes the analogy?
Fish is to water as bird is to:
a) Earth.
b) Air.
c) Tree.
d) Nest.
Answer: b) Air.
20. If 2 = A, 4 = C, 6 = E… Which letter corresponds to the number 14?
a) G.
b) I.
c) J.
d) M.
Correct answer: d) M: The pattern assigns a letter to each even number, progressing two by two in the alphabet.
- 2 = A
- 4 = C
- 6 = E
- 8 = G
- 10 = I
- 12 = K
- 14 = M
Therefore, 14 corresponds to the letter M.
🧩 Results:
✅ Hits: 17-20
🧠 Estimated IQ: 130-145+
🔎 Level: Well above average or genius.
✅ Hits: 13-16
🧠 Estimated IQ: 115-129
🔎 Level: Good cognitive level / Above average.
✅ Hits: 9-12
🧠 Estimated IQ: 100-114
🔎 Level: Average or slightly above average.
✅ Hits: 5-8
🧠 Estimated IQ: 80-99
🔎 Level: Below average / You could improve.
✅ Hits: 0-4
🧠 Estimated IQ: <80
🔎 Level: Low / Time to train your mind 💪
The average score is 100. Values above 130 indicate high intellectual abilities, while an IQ below 85 may indicate cognitive difficulties.
⚠️ Important.
This test is not clinical or official, but it can help you practice mental skills and get a general idea of your cognitive strengths.
