100+ IQ Test Questions with the Answer Key

IQ stands for “intelligence quotient,” which is a score that measures a person’s cognitive abilities, including reasoning, problem-solving, memory, attention to detail, etc. IQ tests have always been important and popular since people aim to know the “numbers” representing their knowledge. 

If you want to create a qualified and accurate IQ test or just want to evaluate your knowledge, then this article is just for you. Here you can find 100+ IQ test questions of different categories, such as:

1. Missing numbers in the sequence,
2. Missing patterns in the picture,
3. Text questions, and
4. True or False questions.

Read till the end to get BONUS information on quiz making!

Section 1 – What is the missing number in the sequence?

1. 4, 9, 16, 25, 36, ___?

1. 21
2. 28
3. 36
4. 45

Correct answer: 1)

2. 18, 15, 20, 17, 22, ?, ?

1. 18 and 23
2. 19 and 24
3. 20 and 25
4. 18 and 24

Correct answer: 2)

3. 1 9 6 (25) 3 2 4

3 2 9 ( ? ) 1 3 7

1. 16
2. 20
3. 25
4. 46

Correct answer: 3)

4. 18, 10, 6, 4, ___?

1. 20
2. 15
3. 5
4. 3

Correct answer: 4)

5. 16 (27) 43

29 ( ? ) 56

1. 27
2. 31
3. 21
4. 34

Correct answer: 1)

6. 6, 11, ?, 27

1. 13
2. 18
3. 20
4. 25

Correct answer: 2)

7. 1, 2, 5, 14, 41, ___?

1. 52
2. 64
3. 81
4. 103

Correct answer: 3)

8. 12 ( 56 ) 16

17 ( ? ) 21

1. 35
2. 40
3. 53
4. 76

Correct answer: 4)

9. 1, 8, 27, ___ ?

1. 33
2. 64
3. 71
4. 73

Correct answer: 2)

10. 2, 3, 5, 7, 11, ___?

1. 13
2. 15
3. 19
4. 20

Correct answer: 1)

11. 24, 21, 19, 18, 15, 13, ?, ?, 7 

1. 10 and 9
2. 11 and 8
3. 12 and 9
4. 11 and 9

Correct answer: 3)

12. 25, 36, 49, 64, 81, ___?

1. 16
2. 34
3. 97
4. 100

Correct answer: 4)

13. 4, 12, 36, 108, ___?

1. 209
2. 324
3. 972
4. 1003

Correct answer: 2)

14. 3, 5, 8, 13, 21, 34, ___? 

1. 47
2. 50
3. 55
4. 63

Correct answer: 3)

15. 16, 17, 15, 18, 14, 19, ?, ?

1. 13 and 20
2. 17 and 21
3. 15 and 22
4. 21 and 24

Correct answer: 1)

16. 1, 3, 6, 8, 16, 18, ?, ?, 76, 78

1. 31 and 33
2. 36 and 38
3. 37 and 39
4. 38 and 40

Correct answer: 2)

17. 7, 16, 9, 5, 21, 16, 9, ?, 4 

1. 13
2. 15
3. 16
4. 17

Correct answer: 1)

18. 2, 4, 8, 10, 20, 22, ?, ?, 92, 94

1. 42 and 44
2. 44 and 46
3. 46 and 48
4. 48 and 50

Correct answer: 2)

19. 24, 22, 19, 15, ?, ?

1. 10 and 5
2. 11 and 6
3. 10 and 4 
4. 12 and 9

Correct answer: 3)

20. 1/1, 3/2, 7/5, 17/12, 41/29, ___?

1. 59/49
2. 77/89
3. 52/38
4. 99/70

Correct answer: 4)

21. 1, 2, 3, 2, 1, 2, 3, 4, 2, 1, 2, 3, 4, 3, 2, ___?

1. 1
2. 2
3. 3
4. 4

Correct answer: 3)

22. 313, 360, 415, ?, 549

1. 521
2. 434
3. 478
4. 502

Correct answer: 3)

23. 3,16; 2,5; 3; 3,5; 2,84; 4,5; ___?

1. 2,15
2. 2,68
3. 5,5
4. 3,36

Correct answer: 2)

24. 14916253649___

1. 2438
2. 8775
3. 3141
4. 6481

Correct answer: 4)

25. 6, 8, 10, 11, 14, 14, ___ ?

1. 18
2. 20
3. 22
4. 24

Correct answer: 1) 

26. 212, 179, 146, 113, ___ ?

1. 92
2. 90
3. 80
4. 100

Correct answer: 3) 

27. 17 (112) 39

28 ( ? ) 49

1. 127
2. 132
3. 134
4. 154

Correct answer: 4)

28. 3 9 3

5 7 1

7 1 ?

1. 1
2. 3
3. 5
4. 7

Correct answer: 2)

29. 7, 13, 24, 45, ___ ?

1. 86
2. 92
3. 101
4. 113

Correct answer: 1)

30. 243 (333) 567

345 ( ? ) 678

1. 222
2. 333
3. 444
4. 555

Correct answer: 2)

31. 4, 5, 7, 11, 19, ___ ?

1. 25
2. 31
3. 35
4. 40

Correct answer: 3)

32. 6, 7, 9, 13, 21, ___ ?

1. 34
2. 35
3. 42
4. 45

Correct answer: 1)

33. 4 8 6

6 2 4

8 6 ?

1. 4
2. 6
3. 7
4. 8

Correct answer: 3)

34. 68, 48, 40, 36, 34, ___ ?

1. 27
2. 29
3. 30
4. 33

Correct answer: 4)

35. 718 (26) 582

474 ( ? ) 226

1. 14
2. 16
3. 26
4. 28

Correct answer: 2)

36. 15, 13, 12, 11, 9, 9, ___ ?

1. 6
2. 7
3. 8
4. 9

Correct answer: 1)

37. 9 4 1

6 6 2

1 9 ?

1. 2
2. 4
3. 5
4. 8

Correct answer: 2) 

38. 11, 12, 14, ?, 26, 42

1. 16
2. 18
3. 20
4. 24

Correct answer: 2) 

39. 8 5 2

4 2 0

9 6 ?

1. 0
2. 1
3. 3
4. 4

Correct answer: 3)

40. 341 (250) 466

282 ( ? ) 398

1. 250
2. 243
3. 232
4. 230

Correct answer: 3)

41. 12 (336) 14

15 ( ? ) 16

1. 200
2. 240
3. 340
4. 480

Correct answer: 4)

42. 4 7 6

8 4 8

6 5 ?

1. 0
2. 2
3. 3
4. 9

Correct answer: 2)

43. 7, 14, 10, 12, 14, 9, ___ ?

1. 7
2. 11
3. 16
4. 19

Correct answer: 4)

44. 17 (102) 12

14 ( ? ) 11

1. 77
2. 86
3. 90
4. 95

Correct answer: 1)

45. 172, 84, 40, 18, ___ ?

1. 10
2. 9
3. 7
4. 3

Correct answer: 3)

46. 1, 5, 13, 29, ___ ?

1. 35
2. 42
3. 61
4. 73

Correct answer: 3)

47. 0, 3, 8, 15, ___ ?

1. 18
2. 24
3. 25
4. 29

Correct answer: 3)

48. 447 (366) 264

262 ( ? ) 521

1. 491
2. 493
3. 504
4. 518

Correct answer: 4)

49. 3 7 16

6 13 28

9 19 ?

1. 35
2. 40
3. 43
4. 50

Correct answer: 2)

50. 7, 9, 12, 16, ? 30, 42, 58

1. 26
2. 22
3. 24
4. 20

Correct answer: 2)

Section 2 – What is the missing number/pattern in the picture?

1. Choose the missing pattern:

1. 1
2. 2
3. 3
4. 4
5. 5
6. 6

2. The missing number is…

1. 15
2. 21
3. 24
4. 25

3. The missing number is…

1. 11
2. 6
3. 3
4. 4

4. The missing number is…

1. 3
2. 8
3. 9
4. 11

5. The missing number is…

1. 40
2. 52
3. 53
4. 66

6. The missing number is…

1. 3
2. 18
3. 27
4. 81

7. The missing number is…

1. 1
2. 2
3. 3
4. 5

8. The missing number is…

1. 6
2. 8
3. 10
4. 11

9. Choose the missing pattern:

1. 1
2. 2
3. 3
4. 4
5. 5
6. 6

10. The missing number is…

1. 2
2. 20
3. 24
4. 25

Section 3 – Which Word Does Not Fit In?

1. Which metal does not fit in?

1. Silver
2. Copper
3. Gold

Correct answer: 2)

2. Which country is the odd one out?

1. Brazil
2. Canada
3. Mexico

Correct answer: 2)

3. Which geometric figure does not fit in?

1. Circle
2. Square
3. Triangle

Correct answer: 1)

4. Which animal does not belong in the group?

1. Kangaroo
2. Koala
3. Lion

Correct answer: 3)

5. Which religion is the odd one out?

1. Islam
2. Judaism 
3. Buddhism

Correct answer: 3)

6. Which city does not fit in?

1. Warsaw
2. Paris
3. Jerusalem

Correct answer: 2)

7. Choose the book that does not fit in:

1. Jane Eyre
2. Emma
3. Pride and Prejudice

Correct answer: 1)

8. Which writer is the odd one out?

1. F. Scott Fitzgerald
2. Vladimir Nabokov
3. Ernest Hemingway

Correct answer: 2)

9. Choose the fruit that does not fit in:

1. Plum
2. Orange
3. Peach

Correct answer: 2)

10. Which unit of measurement does not fit into the list?

1. Kilometer
2. Inch
3. Kilogram

Correct answer: 3)

11. Which of the musical instruments is the odd one out?

1. Flute
2. Violin
3. fife

Correct answer: 2)

12. Which of the words does not fit in?

1. Victoria
2. Niagara
3. Kongo

Correct answer: 3)

13. Which of the words is the odd one out?

1. Pegasus
2. Unicorn
3. Griffin
4. Manticore
5. Capybara

Correct answer: 5)

14. Which of the words does not fit into the list?

1. Deed
2. Level
3. Nun
4. plan

Correct answer: 4)

15. Which of the colors does not belong in the group?

1. Blue
2. Pink
3. Green
4. Purple
5. Yellow

Correct answer: 2)

16. Which of the cities does not fit in?

1. Manila
2. Bogota
3. Liverpool
4. Tokyo
5. Taipei

Correct answer: 3)

17. Which of the geographic terms is the odd one out?

1. Sea
2. Mountain
3. Gulf
4. Ocean

Correct answer: 3)

18. Which of the means of transportation does not belong in the following group?

1. Bike
2. Telega
3. Sled
4. Trolleybus
5. Car

Correct answer: 3) 

19. Which of the words does not fit in?

1. Rarity
2. Cloud
3. Needle
4. Cleaning
5. Arena

Correct answer: 5) 

20. Who of the geniuses is the odd one out?

1. John Nash
2. Albert Einstein
3. Stephen Hawking

Correct answer: 1)

Section 4 – Text Questions

1. It is a quarter to twelve. How much will the clock show if the hour and minute hands are reversed?

1. 6:15
2. 6:45
3. 3:45
4. 9:00

Correct answer: 4)

2. You need to cut the log into 11 pieces. How many cuts will need to be made?

1. 11
2. 10
3. 9
4. 12

Correct answer: 2)

3. How many pages are there in a book if it takes only 35 digits to number them?

1. 28
2. 22
3. 16
4. 14

Correct answer: 2)

4. How many times does the number 1 appear in the sequence from one to one hundred?

1. 21
2. 19
3. 17
4. 18

Correct answer: 1)

5. To get purple paint, you need to mix pink (12 parts) and blue (4 parts). How many kilograms of purple paint can you get if you have 3 kilograms of pink and 3 kilograms of blue paint?

1. 3
2. 4
3. 5
4. 6

Correct answer: 2)

6. The length of the fish’s head is 9 centimeters; the tail is the sum of the lengths of the head and half of the body, and the body is the sum of the lengths of the tail and head. What is the length of the fish in centimeters?

1. 45
2. 36
3. 72
4. 27

Correct answer: 3)

7. What day of the week was yesterday if Thursday was 4 days before the day after tomorrow?

1. Sunday
2. Monday
3. Tuesday
4. Wednesday
5. Thursday
6. Friday

Correct answer: 1)

8. The fisherman caught 5 fish (Pi, Po, Pa, Pu, Pe), each of which has a different weight:

– Pi weighs twice as much as Po;

– Po weighs four and a half times more than Pa;

– Pa weighs half as much as Pu;

– Pu weighs half as much as Pe;

– Pe weighs less than Pi but more than Pa.

Determine the lightest fish:

1. Pi
2. Po
3. Pa
4. Pu
5. Pe

Correct answer: 3)

9. 6121135 is to flame as 21215120 is to ?

1.  Voice
2. Bald
3. Bloat
4. castle

Correct answer: 3) 

10. The hotel has 7 floors. 4 people live on the first floor, and on every other floor  2 more than on the previous floor. Which floor is the elevator called most often?

1. 1
2. 3
3. 5
4. 7

Correct answer: 1)

11. If it rains at 12:00 in the night, can we expect sunny weather 72 hours later?

1. Yes
2. No
3. Maybe

Correct answer: 2)

12. A scientist keeps two books in the bookcase. There are 230 pages in the first book, and 401 in the second. How many pages are there between the first page of the first book and the last page of the second book?

1. 0
2. 1
3. 230
4. 401

Correct answer: 1) 

13. There were 10 crows in the tree. The hunter shot 3 of them. How many crows were there in the tree?

1. 2
2. 3
3. 6
4. 0

Correct answer: 4)

14. A pen and a notebook cost $1.10 in total. The notebook costs $1.00 more than the pen. How much does the pen cost?

1. $0.5
2. $0.05
3. $0.10
4. $1.00

Correct answer: 2)

15. After the conference, 12 people shook hands. How many handshakes did occur?

1. 132
2. 48
3. 66
4. 24

Correct answer: 3)

Section 5 – True or False?

1. The first satellite launched into space was Sputnik II.

1. True
2. False

Correct answer: 2)

2. The term acrophobia refers to a fear of death.

1. True
2. False

Correct answer: 2)

3. Yuri Gagarin was the first person to walk on the Moon.

1. True
2. False

Correct answer: 2)

4. The shortest war in history lasted a day.

1. True
2. False

Correct answer: 2)

5. The sum of the interior angles of a triangle is 180°.

1. True
2. False

Correct answer: 1)

6. Mercury is closer to the Sun than the Earth.

1. True
2. False

Correct answer: 1)

7. The Great Wall is visible from space.

1. True
2. False

Correct answer: 2)

8. The longest river in the world is Kongo.

1. True
2. False

Correct answer: 2)

9. The capital of Japan is Shanghai.

1. True
2. False

Correct answer: 2)

10. If all Bleeps are Razies and all Razies are Lazies, then all Bleeps are definitely Lazies. 

1. True
2. False

Correct answer: 1)

Well done!

I hope our 100+ IQ test questions will help you in your test-making process. As a BONUS, we want to name some apps and WP plugins using which you can create the best and most accurate IQ tests.

Here is the list:

1. Typeform
2. Interact 
3. Forminator (WordPress Only)
4. Quiz Maker (WordPress Only)
5. Thrive Quiz Builder (WordPress Only)
6. WP Quiz Builder (WordPress Only)

Must-reads:

1. Best FAQ Plugins for WordPress – 2023’s List – WP Glob 
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3. 3 Best WordPress Search Plugins – WP Glob 
4. PopUpBuilder.App: Conversion Booster | Review – WP Glob
5. TranslatePress Plugin Review – Top 3 WordPress Translation Plugins in 2023 – WP Glob  

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