Start off with these simple series of numbers. Number series questions measure your ability to reason without words. To answer these questions, you must determine the pattern of the numbers in each series before you will be able to choose which number comes next. These questions involve only simple arithmetic. Although most number series items progress by adding or sub-tracting, some questions involve simple multiplication or division. In each series, look for the degree and direction of change betwee n the numbers. In other words, do the numbers increase or decrease, and by how much?
1. Look at this series: 2, 4, 6, 8, 10, …what number should come next?
a. 11 b. 12
c. 13 d. 14
2. Look at this series: 58, 52, 46, 40, 34 ,…What number should come next?
a. 26 b. 28
c. 30 d. 32
3.Look at this series: 40, 40, 47, 47, 54 ,…What number should come next?
a. 40 b. 44
c. 54 d. 61
4. Look at this series: 544, 509, 474, 439 ,…What number should come next?
a. 404 b. 414
c. 420 d. 445
5. Look at this series: 201, 202, 204, 207 ,…What number should come next?
a. 205 b. 208
c. 210 d. 211
6. Look at this series: 8, 22, 8, 28, 8, …What number should come next?
a. 9 b. 29
c. 32 d. 34
7. Look at this series: 80, 10, 70, 15, 60 ,…What number should come next?
a. 20 b. 25
c. 30 d. 50
8. Look at this series: 36, 34, 30, 28, 24 ,…What number should come next?
a. 20 b. 22
c. 23 d. 26
9. Look at this series: 22, 21, 23, 22, 24, 23 ,… What number should come next?
a. 22 b. 24
c. 25 d. 26
10. Look at this series: 3, 4, 7, 8, 11, 12 ,…What number should come next?
a. 7 b. 10
c. 14 d. 15
11. Look at this series: 31, 29, 24, 22, 17, …What number should come next?
a. 15 b 14
c. 13 d. 12
12.Look at this series: 21, 9, 21, 11, 21, 13 ,… What number should come next?
a. 14 b. 15
c. 21 d. 23
13. Look at this series: 53, 53, 40, 40, 27, 27 ,… What number should come next?
a. 12 b. 14
c. 27 d. 53
14. Look at this series: 2, 6, 18, 54, …What number should come next?
a. 108 b. 148
c. 162 d. 216
15. Look at this series: 1,000, 200, 40 ,…What number should come next?
a. 8 b. 10
c. 15 d. 20
16. Look at this series: 7, 10, 8, 11, 9, 12,…What number should come next?
a. 7 b. 10
c. 12 d. 13
17. Look at this series: 14, 28, 20, 40, 32, 64 ,… What number should come next?
a 52 b. 56
c. 96 d. 128
18. Look at this series: 1.5, 2.3, 3.1, 3.9 ,…What number should come next?
a 4.2 b. 4.4
c. 4.7 d. 5.1
19. Look at this series: 5.2, 4.8, 4.4, 4 ,…What number should come next?
a. 3 b. 3.3
c. 3.5 d. 3.6
20. Look at this series: 2, 1, 1/2, 1/4, . . .What number should come next?
a. 13 b. 1/8
c. 28 d. 1:1/6
Set 2 (Answers begin on page 101.)
This set contains additional, and sometimes more difficult, number series questions. Again, each question
has a definite pattern. Some of the number series may be interrupted by a particular number that appears periodically in the pattern. For example, in the series 14, 16, 32, 18, 20, 32, 22, 24, 32, the number 32 appears as every third number. Sometimes, the pattern contains two alternating series. For example, in the series 1, 5, 3, 7, 5, 9, 7, the pattern is add 4, subtract 2, add 4, subtract 2, and so on. Look carefully for the pattern, and then choose which pair of numbers comes next. Note also that you will be choosing from five options instead of four.
This set contains additional, and sometimes more difficult, number series questions. Again, each question
has a definite pattern. Some of the number series may be interrupted by a particular number that appears periodically in the pattern. For example, in the series 14, 16, 32, 18, 20, 32, 22, 24, 32, the number 32 appears as every third number. Sometimes, the pattern contains two alternating series. For example, in the series 1, 5, 3, 7, 5, 9, 7, the pattern is add 4, subtract 2, add 4, subtract 2, and so on. Look carefully for the pattern, and then choose which pair of numbers comes next. Note also that you will be choosing from five options instead of four.
21. 84 78 72 66 60 54 48
a. 44 34
b. 42 36
c. 42 32
d. 40 34
e. 38 32
22. 3 8 13 18 23 28 33
a. 39 44
b. 38 44
c. 38 43
d. 37 42
e. 33 38
23. 20 20 17 17 14 14 11
23. 20 20 17 17 14 14 11
a. 8 8
b. 11 11
c. 11 14
d. 8 9
e. 11 8
24. 18 21 25 18 29 33 18
a. 43 18
b. 41 44
c. 37 18
d. 37 41
e. 38 41
25. 9 11 33 13 15 33 17
a. 19 33
b. 33 35
c. 33 19
d. 15 33
e. 19 21
26. 2 8 14 20 26 32 38
a. 2 46
b. 44 50
c. 42 48
d. 40 42
e. 32 26
27. 28 25 5 21 18 5 14
a. 11 5
b. 10 7
c. 11 8
d. 5 10
e. 10 5
28. 9 12 11 14 13 16 15
a. 14 13
b. 18 21
c. 14 17
d. 12 13
e. 18 17
29. 75 65 85 55 45 85 35
a. 25 15
b. 25 85
c. 35 25
d. 85 35
e. 25 75
30. 1 10 7 20 13 30 19
a. 26 40
b. 29 36
c. 40 25
d. 25 31
e. 40 50
31. 10 20 25 35 40 50 55
a. 70 65
b. 60 70
c. 60 75
d. 60 65
e. 65 70
32. 40 40 31 31 22 22 13
a. 13 4
b. 13 5
c. 4 13
d. 9 4
e. 4 4
33. 17 17 34 20 20 31 23
a. 26 23
b. 34 20
c. 23 33
d. 27 28
e. 23 28
34. 2 3 4 5 6 4 8
a. 9 10
b. 4 8
c. 10 4
d. 9 4
e. 8 9
35. 61 57 50 61 43 36 61
a. 29 61
b. 27 20
c. 31 61
d. 22 15
e. 29 22
36. 9 16 23 30 37 44 51
a. 59 66
b. 56 62
c. 58 66
d. 58 65
e. 54 61
37. 8 22 12 16 22 20 24
a. 28 32
b. 28 22
c. 22 28
d. 32 36
e. 22 26
38. 6 20 8 14 10 8 12
a. 14 10
b. 2 18
c. 4 12
d. 2 14
e. 14 14
39. 11 16 21 26 31 36 41
a. 47 52
b. 46 52
c. 45 49
d. 46 51
e. 46 52
40. 8 11 21 15 18 21 22
a. 25 18
b. 25 21
c. 25 29
d. 24 21
e. 22 26
This set will give you additional practice dealing with number series questions.
41. 44 41 38 35 32 29 26
a. 24 21
b. 22 19
c. 23 19
d. 29 32
e. 23 20
42. 6 10 14 18 22 26 30
a. 36 40
b. 33 37
c. 38 42
d. 34 36
e. 34 38
43. 34 30 26 22 18 14 10
a. 8 6
b. 6 4
c. 14 18
d. 6 2
e. 4 0
44. 2 44 4 41 6 38 8
a. 10 12
b. 35 32
c. 34 9
d. 35 10
e. 10 52
45. 32 29 26 23 20 17 14
a. 11 8
b. 12 8
c. 11 7
d. 32 29
e. 10 9
46. 14 14 26 26 38 38 50
a. 60 72
b. 50 62
c. 50 72
d. 62 62
e. 62 80
47. 8 12 9 13 10 14 11
a. 14 11
b. 15 12
c. 8 15
d. 15 19
e. 8 5
48. 4 7 26 10 13 20 16
a. 14 4
b. 14 17
c. 18 14
d. 19 13
e. 19 14
49. 3 8 10 15 17 22 24
a. 26 28
b. 29 34
c. 29 31
d. 26 31
e. 26 32
50. 17 14 14 11 11 8 8
a. 8 5
b. 5 2
c. 8 2
d. 5 5
e. 5 8
51. 13 29 15 26 17 23 19
a. 21 23
b. 20 21
c. 20 17
d. 25 27
e. 22 20
52. 16 26 56 36 46 68 56
a. 80 66
b. 64 82
c. 66 80
d. 78 68
e. 66 82
53. 7 9 66 12 14 66 17
a. 19 66
b. 66 19
c. 19 22
d. 20 66
e. 66 20
54. 3 5 35 10 12 35 17
a. 22 35
b. 35 19
c. 19 35
d. 19 24
e. 22 24
55. 36 31 29 24 22 17 15
a. 13 11
b. 10 5
c. 13 8
d. 12 7
e. 10 8
56. 42 40 38 35 33 31 28
a. 25 22
b. 26 23
c. 26 24
d. 25 23
e. 26 22
57. 11 14 14 17 17 20 20
a. 23 23
b. 23 26
c. 21 24
d. 24 24
e. 24 27
58. 17 32 19 29 21 26 23
a. 25 25
b. 20 22
c. 23 25
d. 25 22
e. 27 32
59. 10 34 12 31 14 28 16
a. 25 18
b. 30 13
c. 19 26
d. 18 20
e. 25 22
60. 32 31 32 29 32 27 32
a. 25 32
b. 31 32
c. 29 32
d. 25 30
e. 29 30
Set 4 (Answers begin on page 103.)
This set contains additional number series questions, some of which are in Roman numerals. These items differ from Sets 1, 2, and 3 because they ask you to find the number that fits somewhere into the middle of the series. Some of the items involve both numbers and letters; for these questions, look for a number series and a letter series. (For additional practice in working letter series questions, see Set 5.)
61. Look at this series: 8, 43, 11, 41, __, 39, 17, . . . What number should fill in the blank?
a. 8
b. 14
c. 43
d. 44
62. Look at this series: 15, __, 27, 27, 39, 39, . . . What number should fill the blank?
a. 51
b. 39
c. 23
d. 15
63. Look at this series: 83, 73, 93, 63, __, 93, 43, . . . What number should fill the blank?
a. 33
b. 53
c. 73
d. 93
64. Look at this series: 4, 7, 25, 10, __, 20, 16, 19, . . . What number should fill the blank?
a. 13
b. 15
c. 20
d. 28
65. Look at this series: 72, 76, 73, 77, 74, __, 75, . . . What number should fill the blank?
a. 70
b. 71
c. 75
d. 78
66. Look at this series: 70, 71, 76, __, 81, 86, 70, 91, . . . What number should fill the blank?
a. 70
b. 71
c. 80
d. 96
67. Look at this series: 664, 332, 340, 170, __, 89, . . . What number should fill the blank?
a. 85
b. 97
c. 109
d. 178
68. Look at this series: 0.15, 0.3, __, 1.2, 2.4, . . . What number should fill the blank?
a. 4.8
b. 0.006
c. 0.6
d. 0.9
69. Look at this series:
1/9, 1/3, 1, __, 9, . . . What number should fill the blank?
a. 23 b. 3
c. 6 d. 27
c. 6 d. 27
70. Look at this series: U32, V29, __, X23, Y20, . . . What number should fill the blank?
a. W26
b. W17
c. Z17
71. Look at this series: J14, L16, __, P20, R22, . . .What number should fill the blank?
a. S24
b. N18
c. M18
d. T24
72. Look at this series: F2, __, D8, C16, B32, . . .What number should fill the blank?
a. A16
b. G4
c. E4
d. E3
73. Look at this series: V, VIII, XI, XIV, __, XX, . . .What number should fill the blank?
a. IX
b. XXIII
c. XV
d. XVII
74. Look at this series: XXIV, XX, __, XII, VIII, . . .What number should fill the blank?
a. XXII
b. XIII
c. XVI
d. IV
75. Look at this series: VI, 10, V, 11, __, 12, III, . . .What number should fill the blank?
a. II
b. IV
c. IX
d. 14
Another type of sequence question involves a series ofletters in a pattern.Usually, these questions use the letters’ alphabetical order as a base. To make matters more thrown into the letter sequence. In these series, you will be looking at both the letter pattern and the number pattern. Some of these questions ask you to fill the blank in the middle of the series; others ask you to add to the end of the series.
76. QPO NML KJI _____ EDC
a. HGF
b. CAB
c. JKL
d. GHI
77. JAK KBL LCM MDN _____
a. OEP
b. NEO
c. MEN
d. PFQ
78. B2CD _____ BCD4 B5CD BC6D
a. B2C2D
b. BC3D
c. B2C3D
d. BCD7
79. ELFA GLHA ILJA _____ MLNA
a. OLPA
b. KLMA
c. LLMA
d. KLLA
80. P5QR P4QS P3QT _____ PQV
a. PQW
b. PQV2
c. P2QU
d. PQ3U
81. CMM EOO GQQ _____ KUU
a. GRR
b. GSS
c. ISS
d. ITT
82. QAR RAS SAT TAU _____
a. UAV
b. UAT
c. TAS
d. TAT
83. DEF DEF2 DE2F2 _____ D2E2F3
a. DEF3
b. D3EF3
c. D2E3F
d. D2E2F2
84. SCD TEF UGH ____ WKL
a. CMN
b. UJI
c. VIJ
d. IJT
85. FAG GAF HAI IAH ____
a. JAK
b. HAL
c. HAK
d. JAI
86. BCB DED FGF HIH ___
a. JKJ
b. HJH
c. IJI
d. JHJ
87. ZA5 Y4B XC6 W3D _____
a. E7V
b. V2E
c. VE5
d. VE7
76. QPO NML KJI _____ EDC
a. HGF
b. CAB
c. JKL
d. GHI
77. JAK KBL LCM MDN _____
a. OEP
b. NEO
c. MEN
d. PFQ
78. B2CD _____ BCD4 B5CD BC6D
a. B2C2D
b. BC3D
c. B2C3D
d. BCD7
79. ELFA GLHA ILJA _____ MLNA
a. OLPA
b. KLMA
c. LLMA
d. KLLA
80. P5QR P4QS P3QT _____ PQV
a. PQW
b. PQV2
c. P2QU
d. PQ3U
81. CMM EOO GQQ _____ KUU
a. GRR
b. GSS
c. ISS
d. ITT
82. QAR RAS SAT TAU _____
a. UAV
b. UAT
c. TAS
d. TAT
83. DEF DEF2 DE2F2 _____ D2E2F3
a. DEF3
b. D3EF3
c. D2E3F
d. D2E2F2
84. SCD TEF UGH ____ WKL
a. CMN
b. UJI
c. VIJ
d. IJT
85. FAG GAF HAI IAH ____
a. JAK
b. HAL
c. HAK
d. JAI
86. BCB DED FGF HIH ___
a. JKJ
b. HJH
c. IJI
d. JHJ
87. ZA5 Y4B XC6 W3D _____
a. E7V
b. V2E
c. VE5
d. VE7
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