IQ Mindbenders

This ebook licensed to billy corum. Unauthorized reproduction or distribution of this ebook is illegal.

EE9A0706-0CA4-40D1-B606-7292843C01F7

EE9A0706-0CA4-40D1-B606-7292843C01F7

EE9A0706-0CA4-40D1-B606-7292843C01F7

Joe Cameron

This edition published in 2007 by Arcturus Publishing Limited
26/27 Bickels Yard, 151–153 Bermondsey Street,
London SE1 3HA

In Canada published for Indigo Books
468 King St W,
Suite 500,
Toronto,
Ontario M5V 1L8

Copyright © 2001 Arcturus Publishing Limited

All rights reserved. No part of this publication may be reproduced,
stored in a retrieval system, or transmitted, in any form or by any
means, electronic, mechanical, photocopying, recording or otherwise,
without written permission in accordance with the provisions of the
Copyright Act 1956 (as amended). Any person or persons who do
any unauthorised act in relation to this publication may be liable to
criminal prosecution and civil claims for damages.

ISBN: 978-1-84193-369-6

Printed in China

Typeset by MATS, Southend-on-Sea, Essex

EE9A0706-0CA4-40D1-B606-7292843C01F7

Prepare yourself for the ultimate test of your brain power! We’re devised over 500 IQ
puzzles to stretch your logical and lateral thinking abilities to the limit.

This book has been meticulously compiled from some of the most devious
puzzles you’ve seen. Some will require keen mathematical skill, others an
ability to recognise abstract patterns, but all our puzzles are supremely logical and can
be solved with the right approach.

If you have a sharp mind, some of the answers to these puzzles will jump straight out
of the page at you. However, others will require a bit more thought. Try not to rush for
an answer straight away – have faith in your abilities and all will become clear – and
don’t feel tempted to have a peek at the answer page too soon. If you feel completely
stumped by one particular puzzle, then move on and come back to it later – coming
up with the solution to a later puzzle just might give you the inspiration you need!

But the idea of this book is not about right and wrong answers, it’s about
exercising your mind and flexing your mental muscles. With the right approach, you
too can discover your IQ potential.

The large variety of puzzles here are designed to test your powers of lateral thinking
and problem solving to the max! You’ll have to be able to recognize
patterns and sequences, spot similarities and differences and even pick your way
through our convoluted mindbenders. The solutions to all the puzzles in this book are
staring you right in the face – you just have to be looking at them in the right way!

So sit back, relax your body and let your brain take the strain – it’s all a matter of logic.

EE9A0706-0CA4-40D1-B606-7292843C01F7

EE9A0706-0CA4-40D1-B606-7292843C01F7

Multiplication Table

Cube Square Numerical Prime
Numbers Numbers Values Numbers

EE9A0706-0CA4-40D1-B606-7292843C01F7

EE9A0706-0CA4-40D1-B606-7292843C01F7

1 T
E
PUZZLE S
T
What is missing in the last grid?
1
?
9
ABCDE F

2

PUZZLE

What time should the missing watch read?

2:31 3:13 3:55 4:37

A B CDE

5:19 4:55 5:13 5:32 6:01

EE9A0706-0CA4-40D1-B606-7292843C01F7

EE9A0706-0CA4-40D1-B606-7292843C01F7 T3
PUZZLE

E Which circle replaces the question mark?
S 432
T 53511

6128331

1

72843
9?3

12345678

4

PUZZLE

Which number replaces the question mark and completes the puzzle?

12 4

7 91 4
2

?

10 6 5

5 6 T
E
PUZZLE PUZZLE S
T
Which letter replaces the question mark Which number completes the puzzle?
to complete this circle? 1
5
YW 7
11
?T 13
17
KP ?

7 8

PUZZLE PUZZLE

Which letter replaces the question mark and Which number replaces the question mark
completes the puzzle? and completes the puzzle?

B ?

F 9 25

J 4 36
1 81 64 49
N
11
R

?

EE9A0706-0CA4-40D1-B606-7292843C01F7

T9 10
PUZZLE
PUZZLE
E Which letter is missing from the lower
Which letter completes the puzzle?
middle hexagon?
D G
S
W T
EMH
N JQ
T
M
1N O A
XC L?
I ?D
I B

R Y

11 12

PUZZLE PUZZLE

Which number is missing from the Which number replaces the question mark and
bottom triangle? completes the puzzle?

3 7362

5 2 85 4

8 1124

13 4 21 ?

EE9A0706-0CA4-40D1-B606-7292843C01F7 22
12 ?

13 14 T
E
PUZZLE PUZZLE S

Which letter completes this puzzle? Which letter replaces the question mark to make
this puzzle work?
BGL
KPQ GA T

FA? F ?1

PJ

15 16

PUZZLE PUZZLE

Which number replaces the question mark Where should the minute hand be put
and completes the puzzle? on the bottom clock?

915

483

2?7 13

EE9A0706-0CA4-40D1-B606-7292843C01F7

T 17 18
PUZZLE
PUZZLE
E What is missing from the last hexagon?
S Which letter completes the puzzle?
T
B
1
C
26 28 31 35 ?
E

G

?

19 20

PUZZLE PUZZLE

Which number replaces the question mark and Which number replaces the question mark and
completes the puzzle? completes the puzzle?

2 11 16 2 15
74 32
4 13 7
9 6

5 1
56 84
14 6
EE9A0706-0CA4-40D1-B606-7292843C01F7? 10 11 6

?

21 22 T
E
PUZZLE PUZZLE S
T
What is missing from the last circle? Which letter completes the puzzle?
1
984 IF

2 ? EC

26? EG

23 24

PUZZLE PUZZLE

Which number replaces the question mark and Which letter replaces the question mark and
completes the puzzle? completes the puzzle?

79 47 Z
17 11 19 10 SG
MD I
15 13 16 13 FEH?

6 11 15 15
3 1 16 21 9

26 21 17 ?

EE9A0706-0CA4-40D1-B606-7292843C01F7

T 25
PUZZLE

E Which letter is missing from the lower right hand circle?
S

ACG I

T

1 EYKE

I UOA

MQ S ?

26

PUZZLE

Which number replaces the question mark and completes the puzzle?

73 86 2 10
5 7 6

EE9A0706-0CA4-40D1-B606-7292843C01F7 42

?
16

27 28 T
E
PUZZLE PUZZLE S
T
What is missing from the last square? Which numbers complete the puzzle?
1
289 734619
110907
324 524232
995001
36? 678297
1548??

29 30

PUZZLE PUZZLE

Which number is the odd one out in each oval? Which letter replaces the question mark and
completes the puzzle?
16
LGH
A 32 72 88 CWA
J?O
48 58

28

B 63 86 35

49 77

EE9A0706-0CA4-40D1-B606-7292843C01F7 17

T1 2
PUZZLE
PUZZLE
E What is missing from the last segment?
Which letter completes the puzzle?
S
6 44 1

T FO

H G 4 NL 7
2K Z
5 U? 1

O?

6 10 14 2

3 4

PUZZLE PUZZLE

Which tool will make the last scale Which number replaces the question mark
balance? and completes the puzzle?

? 36

18 49

64

8?

EE9A0706-0CA4-40D1-B606-7292843C01F7

5 T
E
PUZZLE S
T
What is missing from the lower middle circle?
2
31 52 21
65 79 14 19

42 78 36

71 14 65
48 16 32

42 3? 19

6

PUZZLE

Which letter replaces the question mark and completes the puzzle?

ACF J LOSU
T PMKGDB X
V YCEHLNQ
OM I F D ZWU
RVXAEGJN
KH F B YWS ?

EE9A0706-0CA4-40D1-B606-7292843C01F7

T7 8
PUZZLE
PUZZLE
E What is missing from the bottom right hand circle?
Which letter completes the puzzle?
S 5 13
1 228

T LS

29 378

2 R?

61 125 ?

9 10

PUZZLE PUZZLE

Which number replaces the question mark and Which number replaces the question mark and
completes the puzzle? completes the puzzle?

6 9 15 27 ? 10
8 13
16 6

4 19

EE9A0706-0CA4-40D1-B606-7292843C01F7 22 ?

20

11 T
E
PUZZLE S
T
What is missing from the last circle?
2
A PY CV CG YK ?

US EGB

12 13

PUZZLE PUZZLE

Which number replaces the question mark and Which letter completes the puzzle?
completes the puzzle?
BKF
314

729 GA

15? LQ?

14

PUZZLE

Which number replaces the question mark and completes the puzzle?

239

4 73 56 2
95?

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31 4243

T 15 16
PUZZLE
PUZZLE
E What is missing from the last circle?
Which number completes the puzzle?

S2 7 17 4 11
T 19

3 11 19 10 10 62
15
2 14 1
?7 24
16 9
5 13 ?

17

PUZZLE

Which letter replaces the question mark and completes the puzzle?

GBC

HFH

AD?

EE9A0706-0CA4-40D1-B606-7292843C01F7 22 B D I E K

18 19 T
E
PUZZLE PUZZLE S
T
Which four digit number is missing from Which number completes the puzzle?
the last oval?
13 65
195 27 61

383 2

78 52
88 4?

575 20
763
955 PUZZLE

? Which letter replaces the question mark and
completes the puzzle?
EE9A0706-0CA4-40D1-B606-7292843C01F7 23
BY

CX

EV

GT

KP

M?

T 21
PUZZLE

E Which of the lower circles replaces the question mark?
SK

Q OM

T EUSQG

A I YWU K S
2 MC A Y O

GEC
?

ADFG I LPR

22

PUZZLE

Which number replaces the question mark and completes the puzzle?

17 3

4 10 6

3 47 65 ?

EE9A0706-0CA4-40D1-B606-7292843C01F7 23

PUZZLE

Which letter completes the puzzle?

CHAGH J
EF?

24 R M S M N L

24 T
E
PUZZLE S
T
What is missing from the last star?
1 4 10 2

4 6 11 92 7 25

86 ?

32 28 55

25

PUZZLE

Which letter completes the puzzle?

FPZ
C J MTWD
AK ? E

26

PUZZLE

Which number replaces the question mark and completes the puzzle?
565

7 3 2 10 5 ?

27

PUZZLE

Which number replaces the question mark and completes the puzzle?

EE9A0706-0CA4-40D1-B606-7292843C01F7 37 28 39
18 12 ?

T 28
PUZZLE

E Which segment completes the puzzle?

S CLFUJCLFUJ 1 2
FU KH

NVQRANVQRA VQRA TEPY
T W X G S MW X G S M W X G S 3 U J C L
HBOD BODK BO AN AN

PY I I TE S MW X

CL F FUJ 4 DKHB 5

2 NVQR VQRA Y I EP GS
W X G S MW X G S M C L F U BODK

HBODKHBODK NVQR I TEP

PY I TEPY I TE XG JC

29

PUZZLE

Which letter replaces the question mark and completes the puzzle?

AJ IR QZ
FM NU VC

EN MV
JQ R?

EE9A0706-0CA4-40D1-B606-7292843C01F7 30

PUZZLE

Which letter follows the sequence to complete the puzzle?

A H FMK R P ?

26

1 2 T
E
PUZZLE PUZZLE S
T
Which number replaces the question mark and Which number replaces the question mark
completes the sequence? and completes the sequence? 3

10 14 4 1 11 11 3
31 49
33165
6 1
92942
7 12
21 53 64893

4 ? 51?14

3 4

PUZZLE PUZZLE

Which number replaces the question mark and Which letter replaces the question mark and
completes the sequence? completes the sequence?

5 13 3 13 INC 2
3 94 7 6 QRG 7
4 DOM 8
5 8 7 SUI 7
1 9 8 AD? 2 27
4 2

16 4

4 66 3
1 32 ?

EE9A0706-0CA4-40D1-B606-7292843C01F7

T5
PUZZLE

E Which letter replaces the question mark and completes the sequence?

S

T R
FN

GO

3

P?
Z

6

PUZZLE

Which number replaces the question mark and completes the sequence?

4287 1088
6366 7142
5153 8729

3248 3062
2189 4164
28 7 4 9 7 63?5

EE9A0706-0CA4-40D1-B606-7292843C01F7

7 T
E
PUZZLE S
T
Which letter replaces the question mark and completes the puzzle?
3
F G C
BH MK JL

PB G L UD
N B ?

8 9

PUZZLE PUZZLE

Which number replaces the question mark and Which letter replaces the question mark and
completes the puzzle? completes the puzzle?

39 16 E G
722 573 MR QX
41 48

98 45 H WJ ?
217 8?1
63 23

10

PUZZLE

Which letter replaces the question mark and completes the puzzle?

B UUOLQ G

FHK PKL JCA

EE9A0706-0CA4-40D1-B606-7292843C01F7 MSDGO I HBKE ? 29

T 11 12
PUZZLE
PUZZLE
E Which number replaces the question mark and
Which letter replaces the question mark and
completes the puzzle? completes the puzzle?

S FJ
CZO
179 A NMU
C?B
T
SJ
363

542

3

275

26?

13

PUZZLE

Which number replaces the question mark and completes the puzzle?

43

1 12 6 795

2 8 11

14 24 12

7?1

8 21 11 631

EE9A0706-0CA4-40D1-B606-7292843C01F7 30 13 9

14 15 T
E
PUZZLE PUZZLE S
T
Which letter replaces the question mark Which number replaces the question mark
and completes the puzzle? and completes the puzzle? 3

A 39 47
16 13
GI
43
CE L 3?

F DG ? 64 22
06 43

16

PUZZLE

Which playing card replaces the question mark and completes the puzzle?

EE9A0706-0CA4-40D1-B606-7292843C01F7 ?

31

T 17 18
PUZZLE
PUZZLE

E Which letter replaces the question mark Which letter replaces the question mark
and completes the puzzle?
and completes the sequence?
DF I
S
PU ZE

T UJ X RM
KP

EMO

AVR

3 FK ?O GNV
AD YT
EA?

19 20

PUZZLE PUZZLE

Where should the missing hour Which letter replaces the question mark and
hand point? completes the puzzle?

32 FM H CH

RL P GG

SJ F NI

DK ? BE

EE9A0706-0CA4-40D1-B606-7292843C01F7

21 T
E
PUZZLE S
T
Bungalow Mavis, Harold and Bette all own
Flat properties in rather exclusive 3
Terrace areas of the town, and have
Shangri-la Way recently had them valued. Harold lives
Honeysuckle in Meadow Rise, but his property is
Row not worth £75,000. The property in
Meadow Rise Honeysuckle Row worked out as the
£40,000 cheapest, despite it being a lovely
£75,000 road. Bette lives in a terrace house,
£100,000 although there are no terraced houses
along Shangri-La Way. Mavis’s
Mavis property is not a bungalow. Can you
deduce from these clues which person
Harold lives where, in which property, and
how much the property was valued.
Bette
Owner Property Road Value
£40,000

£75,000

£100,000

Shangri-la Way
Honeysuckle
Row
Meadow Rise

22 23

PUZZLE PUZZLE

Which letter replaces the question mark and Which number replaces the question mark and
completes the puzzle? completes the puzzle?

U 6 EJI 3
LC
MD
DL FP
KG
KT
? 9 NRG ?

EE9A0706-0CA4-40D1-B606-7292843C01F7 33

T 24 C
E
PUZZLE
A
Which picture cube does this shape make?
S
T D

3

B

25 26

PUZZLE PUZZLE

Which letter replaces the question mark and Joe and John are playing
completes the puzzle? marbles. If Joe loses one
marble to John, they will both
DGD have the same number of
marbles, but if John loses one
HL marble to Joe, Joe will have
twice the number of marbles as
Y John. How many marbles do
the two boys currently have?
RL
EE9A0706-0CA4-40D1-B606-7292843C01F7
SK?

34

27 T
E
PUZZLE S
T
Which number replaces the question mark and completes the puzzle?
3
4 13 3 21
12 7 9 596 852 5 12 ?

3 12 7 16

28 29

PUZZLE PUZZLE

Which number replaces the question Which number replaces the question
mark and completes the puzzle? mark and completes the puzzle?

36 41 3 12 6 275
15 9
29 13 ? 57 18 12

16 10

81 22

11 4 8 834
15 11
12 ?

30

PUZZLE

Which domino replaces the question mark to complete the puzzle?

EE9A0706-0CA4-40D1-B606-7292843C01F7 35

T1 2
PUZZLE
PUZZLE
E Which number is missing?
Which letter completes the puzzle?
S 45
F KL Q
3
T 2 9 11 2
3

45 39 A KZ V

2 12 61

41 77 4 M IH D

5?
63

3 H CN ?

PUZZLE 4

Which symbol replaces the question mark PUZZLE
and completes the puzzle?
Which number replaces the question mark
? and completes the puzzle?

36 42

98

15 15

22 ?

EE9A0706-0CA4-40D1-B606-7292843C01F7

5 T
E
PUZZLE S
T
What is missing from the last circle?
4
42 37 4 8
87 95 11 7 37

63 52 6 5

5 1 2 10 3 11
13 11 14 6 17 9

9 3 60 7?

6

PUZZLE

Which letter replaces the question mark and completes the puzzle?

HLPTXBF J
AFKPUZEJ
MS Y E K QWC
CJQXEL SZ
Q Y GOWEMU
DMV E NWF ?

EE9A0706-0CA4-40D1-B606-7292843C01F7

T7 8
PUZZLE
PUZZLE
E What is missing from the bottom left circle?
S Which letter completes the puzzle?

128 C JM

T SG

2 QDE

4 R?

?56

9 10

PUZZLE PUZZLE

Which number replaces the question mark Which number replaces the question mark
and completes the puzzle? and completes the puzzle?

32 45 60 77 ? 35

38 41

47

53

5?

EE9A0706-0CA4-40D1-B606-7292843C01F7

11 T
E
PUZZLE S
T
What is missing from the last circle?
4
AF DJ BI OWF O
K P P E?

12 13

PUZZLE PUZZLE

Which number replaces the question mark and Which letter completes the puzzle?
completes the puzzle?
BDG
123

214 ED

56? ? IC

14

PUZZLE

Which number replaces the question mark and completes the puzzle?

759

2 36 25 4
17 11 ?

EE9A0706-0CA4-40D1-B606-7292843C01F7 9 6 10 4 7 6 39

T 15 16
PUZZLE
PUZZLE
E What is missing from the last circle?
SH C Z Which number completes the puzzle?
T
66 4 14
K FW 12 24

NQ ? 3 12 78

4 5 12
24

? 10

17

PUZZLE

Which of the bottom letters replace the question mark and completes the puzzle?

LZE

T AM

VN?

EE9A0706-0CA4-40D1-B606-7292843C01F7 40 H D X W B

18 19 T
E
PUZZLE PUZZLE S
T
What is missing from the last oval? Which number completes the puzzle?

7122 72 3 10
95 13 7
6521
61 45 4
8332 75 9?

4743 20

9911 PUZZLE

387? Which letter replaces the question mark and
completes the puzzle?
EE9A0706-0CA4-40D1-B606-7292843C01F7 41
BH

CE

DB

DI

EF

F?

EE9A0706-0CA4-40D1-B606-7292843C01F7 T 21
PUZZLE

E What is missing from the central circle?
S5

217

T 51342

137?142
72312
622
5

4

12345678

22

PUZZLE

Which single digit number replaces the question mark?

56 6

3 2 4 10 15 ?

23

PUZZLE

Which letter completes the puzzle?

B F J NR V
PUZ

42 C I O U A ?

24 T
E
PUZZLE S
T
What is missing from the last star?
782 4

5 33 67 2 43

75 ?

11 9 71 7 12

25

PUZZLE

Which letter completes the puzzle?

CKC
RMDQ Z E
FVV?

26

PUZZLE

Which number replaces the question mark and completes the puzzle?

19 3

22 21 ?

3 76 2 5 8

27

PUZZLE

Which letter replaces the question mark and completes the puzzle?

EE9A0706-0CA4-40D1-B606-7292843C01F7 BF MC OA
L D ?

T 28
PUZZLE

E Which shape completes the puzzle?

S 5364819720 1 2
42 35

5102947386 6510 6051

T 3816029574 7865 3 5278
6739 8015 62 35 49

374 829 6015

291 463 4 5278 5

0837 5164 24 91 24

7024163985 6051 5161

0815243796 5078 7851

2681350947 92 92

4

29

PUZZLE

Which number replaces the question mark and completes the puzzle?

31 65 37
27 22 14

96 9 12
49 3?

EE9A0706-0CA4-40D1-B606-7292843C01F7 30

PUZZLE

Which letter replaces the question mark and completes the puzzle?

BC E GKMQ ?

44

1 T
E
PUZZLE S
T
Which grid replaces the question mark?
5
?
45
ABCDE F

2

PUZZLE

Which time from the choices given follows the sequence?

1:01 3:01 3:12 4:13

A B CDE

5:21 5:51 5:44 4:41 5:23

EE9A0706-0CA4-40D1-B606-7292843C01F7

EE9A0706-0CA4-40D1-B606-7292843C01F7 T3
PUZZLE

E Which letter replaces the question mark from the choices given below?
S JPT
T EMRX Y

A I VBFBE
CQMG I
XT?

5

B F HK L NQS

4

PUZZLE

Which number replaces the question mark and completes the puzzle?

72

3 61 4
9

46 4 ?

5 6 T
E
PUZZLE PUZZLE S
T
What is missing from this wheel? Which letter completes the puzzle?
5
A C B
R D C
D
K ? G
J
?

7 8

PUZZLE PUZZLE

Which number replaces the question mark Which number replaces the question mark
and completes the puzzle? and completes the puzzle?

72 9

69 5 20

64 13 2
47 15 ?
57
EE9A0706-0CA4-40D1-B606-7292843C01F7 47
48

?

T9 10
PUZZLE
PUZZLE
E What is missing from the last hexagon?
SK P N Which letter completes the puzzle?
T
C M
VQ S
Q G
TY ?
F IK
5
N

JJ EO

H A

L ?

11 12

PUZZLE PUZZLE

Which number replaces the question mark and Which number replaces the question mark and
completes the puzzle? completes the puzzle?

23 2736
38 4 14 5
45 6881
64 1 40 ?
67
EE9A0706-0CA4-40D1-B606-7292843C01F7 48 ?

13 14 T
E
PUZZLE PUZZLE S
T
What is missing from the last hexagon? Which letter completes the puzzle?
5
BDG GJ
FM I FN

SJ? Y?

15 16

PUZZLE PUZZLE

Which number replaces the question mark and Where should the hour hand be pointing on
completes the puzzle? the bottom clock?

541

622

34? ?

EE9A0706-0CA4-40D1-B606-7292843C01F7 49