IQ mindbenders

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IQ Mindbenders pp 001-071 18/8/05 5:27 pm Page 1
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IQ Mindbenders pp 001-071 18/8/05 5:27 pm Page 2
EE9A0706-0CA4-40D1-B606-7292843C01F7
Joe Cameron
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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
IQ Mindbenders pp 001-071 23/3/07 11:11 am Page 4
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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.
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Multiplication Table
Cube
Numbers
Square
Numbers
Numerical

Values
Prime
Numbers
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PUZZLE
1
What is missing in the last grid?
PUZZLE
2
What time should the missing watch read?
ABC
D
E
2:31 3:13 3:55 4:37
5:19
4:55 5:13
5:32
6:01
A BCDEF
?
T
E
S
T
1
9
IQ Mindbenders pp 001-071 18/8/05 5:27 pm Page 9

EE9A0706-0CA4-40D1-B606-7292843C01F7
T
E
S
T
1
10
PUZZLE
3
Which circle replaces the question mark?
PUZZLE
4
Which number replaces the question mark and completes the puzzle?
2
56
4
1
9
7
?
12 4
432
53511
6128331
72843
9?3
12345678
IQ Mindbenders pp 001-071 18/8/05 5:27 pm Page 10
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T

E
S
T
1
11
PUZZLE
5
PUZZLE
6
Which letter replaces the question mark
to complete this circle?
Which number completes the puzzle?
PUZZLE
7
PUZZLE
8
Which letter replaces the question mark and
completes the puzzle?
Which number replaces the question mark
and completes the puzzle?
B
F
J
N
R
?
?
9
4
1

25
36
4981 64
5
11
7
13
17
?
W
T
K
?
Y
P
IQ Mindbenders pp 001-071 18/8/05 5:27 pm Page 11
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T
E
S
T
1
12
PUZZLE
9
PUZZLE
10
Which letter is missing from the lower
middle hexagon?
Which letter completes the puzzle?

PUZZLE
11
PUZZLE
12
Which number is missing from the
bottom triangle?
Which number replaces the question mark and
completes the puzzle?
3
5
8
13
22
?
7362
4582
1124
124
?
G
D
Q
?
Y
R
X
N
T
J
L

B
I
C
M
W
EMH
NO
I?D
A
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T
E
S
T
1
13
PUZZLE
13
PUZZLE
14
Which letter completes this puzzle? Which letter replaces the question mark to make
this puzzle work?
PUZZLE
15
PUZZLE
16
Which number replaces the question mark
and completes the puzzle?
Where should the minute hand be put

on the bottom clock?
915
48
2?
7
3
A
?
JP
F
G
BGL
KPQ
FA?
IQ Mindbenders pp 001-071 18/8/05 5:27 pm Page 13
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T
E
S
T
1
14
PUZZLE
17
PUZZLE
18
What is missing from the last hexagon?
Which letter completes the puzzle?
PUZZLE
19

PUZZLE
20
Which number replaces the question mark and
completes the puzzle?
Which number replaces the question mark and
completes the puzzle?
211
2
6
374
9
5
6
6
58
1
?
4
2
16
?
6
11
7
13
4
15
10
B
G

E
C
?
26 28 31 35 ?
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T
E
S
T
1
15
PUZZLE
21
PUZZLE
22
What is missing from the last circle? Which letter completes the puzzle?
PUZZLE
23
PUZZLE
24
Which number replaces the question mark and
completes the puzzle?
Which letter replaces the question mark and
completes the puzzle?
79
11
1315
17
47

10
1316
19
611
16
2126
31
15
9
?17
21
Z
S
M
G
I
?
D
HEF
?E
IF
EG
C
984
2
26
?
IQ Mindbenders pp 001-071 18/8/05 5:27 pm Page 15
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T

E
S
T
1
16
PUZZLE
25
Which letter is missing from the lower right hand circle?
PUZZLE
26
Which number replaces the question mark and completes the puzzle?
37
5
68
7
102
6
24
?
ACG I
EYKE
IUOA
MQ S ?
IQ Mindbenders pp 001-071 18/8/05 5:27 pm Page 16
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T
E
S
T
1

17
PUZZLE
27
PUZZLE
28
What is missing from the last square? Which numbers complete the puzzle?
PUZZLE
29
PUZZLE
30
Which number is the odd one out in each oval? Which letter replaces the question mark and
completes the puzzle?
B
A
28
63
35
32
16
48
88
58
72
77
86
49
G
C
L
J

A
H
?
W
O
734619
110907
524232
995001
678297
1548??
289
324
36
?
IQ Mindbenders pp 001-071 18/8/05 5:27 pm Page 17
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T
E
S
T
2
18
PUZZLE
1
PUZZLE
2
What is missing from the last segment? Which letter completes the puzzle?
PUZZLE
3

PUZZLE
4
Which tool will make the last scale
balance?
Which number replaces the question mark
and completes the puzzle?
?
64
36
49
8?
NL
?U
41
7
46
4
5
610142
1
Z
O
G
OF
H
K
?
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T

E
S
T
2
19
PUZZLE
5
What is missing from the lower middle circle?
PUZZLE
6
Which letter replaces the question mark and completes the puzzle?
ACF J LOSU
TPMKGDBX
VYCEHLNQ
OM I F D ZWU
RVXAEGJN
KHFBYWS ?
31
5
24
6
21
4
63
1
52
9
87
7
71

8
24
4
14
6
3
1
65
2
91
3
?
IQ Mindbenders pp 001-071 18/8/05 5:27 pm Page 19
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T
E
S
T
2
20
PUZZLE
7
PUZZLE
8
What is missing from the bottom right hand circle? Which letter completes the puzzle?
PUZZLE
9
PUZZLE
10
Which number replaces the question mark and

completes the puzzle?
Which number replaces the question mark and
completes the puzzle?
6 9 15 27
?
813
10
616
419
?22
37
228
LS
R?
8
1513
29
61 125
?
IQ Mindbenders pp 001-071 18/8/05 5:27 pm Page 20
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T
E
S
T
2
21
PUZZLE
11
PUZZLE

13
What is missing from the last circle?
Which letter completes the puzzle?
PUZZLE
12
PUZZLE
14
Which number replaces the question mark and
completes the puzzle?
Which number replaces the question mark and completes the puzzle?
314
927
15
?
2
7
13
4
9
3
5
24
3
5
9
2
34
6
?
LQ

BKF
GA
?
A
P
U
Y
C
S
V
C
E
G
Y
G
K
?
B
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T
E
S
T
2
22
PUZZLE
15
PUZZLE
16

What is missing from the last circle? Which number completes the puzzle?
PUZZLE
17
Which letter replaces the question mark and completes the puzzle?
G
BC
HFH
AD?
BD I EK
411
9
26
1
10 10
5
7
?
1
14 1
4
16
2
9
2717
31119
513
?
IQ Mindbenders pp 001-071 18/8/05 5:27 pm Page 22
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T

E
S
T
2
23
PUZZLE
18
PUZZLE
19
Which four digit number is missing from
the last oval?
Which number completes the puzzle?
PUZZLE
20
Which letter replaces the question mark and
completes the puzzle?
CX
GT
KP
M?
BY
EV
65
1
6
13
7
2
52
4

78
8
8
?
195
383
575
763
955
?
IQ Mindbenders pp 001-071 18/8/05 5:27 pm Page 23
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T
E
S
T
2
24
PUZZLE
21
Which of the lower circles replaces the question mark?
Which letter completes the puzzle?
PUZZLE
23
PUZZLE
22
Which number replaces the question mark and completes the puzzle?
C
E
H

M
R
S
A
G
F
M
H
?
L
J
N
1
3
7
?5
6
7
43
410 6
K
QOM
EUSQG
AIYWUKS
MCA Y O
GEC
?
ADFG I LPR
IQ Mindbenders pp 001-071 18/8/05 5:27 pm Page 24
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