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Logical Thinking Exercise with Numbers

Copyright 2023: Edublox (Pty) Ltd. This page may not be copied, in whole or in part, without the written consent of Edublox.

Challenging and enjoyable logical thinking exercises that can be done in conjuntion with Edublox’s Development Tutor or Reading Tutor.

Complete the sequences below. You will find the answers at the bottom of the page.

GROUP A
1. 1 2 3 4 5 ? ? ?
2. 26 27 28 29 30 ? ? ?
3. 88 89 90 91 ? ? ?
4. 108 109 110 111 ? ? ?

GROUP B
1. 10 9 8 7 6 ? ? ?
2. 63 62 61 60 ? ? ?
3. 203 202 201 200 ? ? ?
4. 77 76 75 74 ? ? ?

GROUP C
1. 2 4 6 8 ? ? ?
2. 18 21 24 27 ? ? ?
3. 44 48 52 56 ? ? ?
4. 121 126 131 136 ? ? ?

GROUP D
1. 42 40 38 36 ? ? ?
2. 150 140 130 120 ? ? ?
3. 66 60 54 48 ? ? ?
4. 99 92 85 78 ? ? ?

GROUP E
1. 1 2 4 8 16 ? ? ?
2. 50 100 200 400 ? ? ?
3. 3 6 12 24 ? ? ?
4. 32 64 128 256 ? ? ?

GROUP F
1. 3 9 27 81 ? ? ?
2. 5 15 45 135 ? ? ?
3. 2 6 18 54 ? ? ?
4. 12 36 108 324 ? ? ?

GROUP G
1. 120 60 30 ? ?
2. 200 100 50 ? ?
3. 400 200 100 ? ?
4. 1000 500 250 ? ?

GROUP H
1. 1 20 4 19 7 18 ? ? ? ?
2. 89 35 88 40 87 45 86 ? ? ?
3. 17 101 23 100 29 99 ? ? ?
4. 2 88 12 87 22 ? ? ?

GROUP I
1. 5 33 8 28 11 23 ? ? ?
2. 9 16 13 14 17 12 ? ? ?
3. 4 18 10 12 16 6 ? ? ?
4. 12 88 23 76 34 64 ? ? ?

GROUP J
1. 3 2 6 5 12 8 ? ? ?
2. 4 12 8 16 16 20 ? ? ?
3. 5 10 15 25 45 40 ? ? ?
4. 6 12 12 22 24 32 ? ? ?

GROUP K
1. 20 2 17 4 14 8 ? ? ?
2. 3 9 9 7 27 5 ? ? ?
3. 12 24 24 18 48 12 ? ? ? ?
4. 24 18 18 36 12 72 ? ? ?

GROUP L
1. 2 16 4 8 8 4 ? ? ?
2. 3 81 9 27 27 9 ? ? ?
3. 256 4 64 8 16 16 ? ?
4. 5 375 10 75 20 15 40 ? ?

GROUP M
1. 3 4 6 9 13 ? ? ?
2. 8 9 11 14 18 ? ? ?
3. 44 45 47 50 54 ? ? ?
4. 101 102 104 107 ? ? ?

GROUP N
1. 1 1 2 6 24 120 ? ?
2. 5 5 10 30 120 ? ?
3. 3 3 6 18 72 ? ?
4. 4 4 8 24 96 ? ?

GROUP O
1. 10 10 11 9 13 7 16 4 ? ? ?
2. 33 30 34 29 36 27 39 24 ? ? ?
3. 20 40 21 39 23 37 26 ? ? ? ?
4. 15 15 16 14 18 12 21 ? ? ? ?

GROUP P
1. 1 2 3 5 8 13 ? ? ?
2. 2 4 6 10 16 ? ? ?
3. 3 3 6 9 15 24 ? ? ?
4. 4 5 9 14 23 37 ? ? ?

GROUP Q
1. 1 1 2 6 12 12 24 ? ? ?
2. 10 10 20 60 120 120 240 ? ? ?
3. 5 5 10 30 60 60 120 ? ? ?
4. 22 22 44 132 264 264 528 ? ? ?

GROUP R
1. 1 2 2 4 8 11 33 37 ? ? ?
2. 5 6 6 8 16 19 57 61 ? ? ?
3. 25 26 26 28 56 59 177 181 ? ? ?
4. 12 13 13 15 30 33 99 103 ? ? ?

GROUP S
1. 51 50 50 48 96 93 279 275 ? ? ?
2. 11 10 10 8 16 13 39 35 ? ? ?
3. 7 6 6 4 8 5 15 11 ? ? ?
4. 22 21 21 19 38 35 105 101 ? ? ?
.

Answers:

GROUP A
1. 6 7 8
2. 31 32 33
3. 92 93 94
4. 112 113 114

GROUP B
1. 5 4 3
2. 59 58 57
3. 199 198 197
4. 73 72 71

GROUP C
1. 10 12 14
2. 30 33 36
3. 60 64 68
4. 141 146 151

GROUP D
1. 34 32 30
2. 110 100 90
3. 42 36 30
4. 71 64 57

GROUP E
1. 32 64 128
2. 800 1600 3200
3. 48 96 192
4. 512 1024 2048

GROUP F
1. 243 729 2187
2. 405 1215 3645
3. 162 486 1458
4. 972 2916 8748

GROUP G
1. 15 7½
2. 25 12½
3. 50 25
4. 125 62½

GROUP H
1. 10 17 13 16
2. 50 85 55
3. 35 98 41
4. 86 32 85

GROUP I
1. 14 18 17
2. 21 10 25
3. 22 0 28
4. 45 52 56

GROUP J
1. 24 11 48
2. 32 24 64
3. 135 55 405
4. 48 42 96

GROUP K
1. 11 16 8
2. 81 3 243
3. 96 6 192 0
4. 6 144 0

GROUP L
1. 16 2 32
2. 81 3 243
3. 4 32
4. 3 80

GROUP M
1. 18 24 31
2. 23 29 36
3. 59 65 72
4. 111 116 122

GROUP N
1. 720 5040
2. 600 3600
3. 360 2160
4. 480 2880

GROUP O
1. 20 0 25
2. 43 20 48
3. 34 30 30 35
4. 9 25 5 30

GROUP P
1. 21 34 55
2. 26 42 68
3. 39 63 102
4. 60 97 157

GROUP Q
1. 72 144 144
2. 720 1440 1440
3. 360 720 720
4. 1584 3168 3168

GROUP R
1. 148 153 765
2. 244 249 1245
3. 724 729 3645
4. 412 417 2085

GROUP S
1. 1100 1095 5475
2. 140 135 675
3. 44 39 195
4. 404 399 1995
.


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