Number Series Problems

• Study notes for a chapter challenge on number series problems.

Number Series Questions

• Instructions: Study the pattern in the given series of questions (1-44) and choose the number that will come in place of the question mark (?).

Question 1

• Series: 1, 1, 2, 3, 5, 8, 13, ?
• SSC CPO 2024 question.
• Options: (a) 24, (b) 20, (c) 21, (d) 22.

Question 2

• Series: 4, 5, 7, 11, ?, 35
• Rajasthan Police Constable 2022 question.
• Options: (a) 17, (b) 18, (c) 21, (d) 19.

Question 3

• Series: 9, 13, 21, 33, ?, 69
• DSSSB Workshop 2024 question.
• Options: (a) 47, (b) 49, (c) 44, (d) 43.

Question 4

• Series: 7, 16, 41, 94, 249, ?
• CUET (UG) 2022 question.
• Options: (a) 468, (b) 586, (c) 486, (d) 568.

Question 5

• Series: 5, 9, 18, 34, 59, ?
• CRPF (HC) 2023 question.
• Options: (a) 94, (b) 93, (c) 95, (d) 90.

Question 6

• Series: 48, 32, 16, ?
• RRB NTPC 2020 question.
• Options: (a) -9, (b) 12, (c) 13, (d) 0.

Question 7

• Series: [5/9], [14/9], [23/9], [32/9], [41/9], ?
• SSC (10+2) Tier I 2024 question.
• Options: (a) [50/9], (b) [44/9], (c) [51/9], (d) [47/9].

Question 8

• Series: 1, 1, 9, 27, 25, 125, ?, 343
• UP Police Constable 2024 question.
• Options: (a) 34, (b) 22, (c) 37, (d) 49.

Question 9

• Series: 2, 9, 28, 65, 126, ?
• UP Police (AO) 2024 question.
• Options: (a) 223, (b) 137, (c) 217, (d) 199.

Question 10

• Series: -12, +24, -48, +96, ?, +384
• SSC MTS 2024 question.
• Options: (a) -192, (b) -108, (c) 108, (d) 96.

Question 11

• Series: 129, 128, 124, 115, 99, ?
• SSC (10+2) Tier I 2024 question.
• Options: (a) 71, (b) 74, (c) 72, (d) 73.

Question 12

• Series: 65, 88, 77, 98, 91, 108, ?, 118, 125
• SSC Steno 2020 question.
• Options: (a) 107, (b) 104, (c) 95, (d) 99.

Question 13

• Series: 11, 39, 75, 119, ...?...
• UP Police Constable 2024 question.
• Options: (a) 171, (b) 161, (c) 191, (d) 181.

Question 14

• Series: 7, 16, 43, 124, 367, ?
• SSC CPO 2024 question.
• Options: (a) 1066, (b) 1096, (c) 1076, (d) 1086.

Question 15

• Series: 286, 257, 230, 205, ?, 161
• DP Constable 2023 question.
• Options: (a) 178, (b) 192, (c) 188, (d) 182.

Question 16

• Series: 25, 40, 70, 115, 175, ?
• SSC CPO 2024 question.
• Options: (a) 225, (b) 250, (c) 200, (d) 275.

Question 17

• Series: 25, 42, 61, 82, ?, 130
• SSC Constable (GD) 2022 question.
• Options: (a) 112, (b) 108, (c) 105, (d) 115.

Question 18

• Series: 23, 27, 43, 79, 143, ?
• SSC CGL (Tier-I) 2024 question.
• Options: (a) 240, (b) 243, (c) 200, (d) 250.

Question 19

• Series: 2, 3, 6, 18, ?, 1944
• SSC JE 2023 question.
• Options: (a) 118, (b) 126, (c) 108, (d) 112.

Question 20

• Series: 5, 19, 49, 101, ?
• Options: (a) 184, (b) 176, (c) 181, (d) 507.

Question 21

• Series: 1000, 759, 618, 545, 514, ?
• Options: (a) 504, (b) 502.

Question 22

• Series: 1/121, 1/11, 1, ?, 121
• Options: (a) 1, (b) 12.

Question 23

• Series: 8, 23, 38, 53, 68, ?
• Options: (a) 87, (b) 85, (c) 24.

Question 24

• Series: 15, 25, 45, 85, 165, ?
• Options: (a) 315, (c) 363.

Question 25

• Series: 39, 42, 48, 57, 69, ?, 102
• Options: (a) 84, (b) 87, (c) 78.

Question 26

• Series: 125, 25, 5, 1, 1/5, 1/25, 1/125
• Options: (a) 1,(b)-2, (c) 2, (e) none of these.

Question 27

• Series: 1, 6, 15, 28, ?, ?, 91
• Options: (a) 40, 60, (b) 45, 66, (c) 44, 54, (d) 42, 56.

Question 28

• Series: 12, 37, 110, 331, 992, ?
• Options: (a) 2947, (b) 2867, (c) 2877, (d) 2977.

Question 29

• Series: 33, 80, 108, ?, 183, 230, 258
• Options: (a) 155, (b) 143, (c) 138, (d) 160.

Question 30

• Series: 549, 525, 477, 405, 309, ?
• Options: (a) 189, (b) 139, (c) 145, (d) 167.

Question 31

• Series: -1/729, -1/81, -1/9, ?,
• Options: (a) 1, (b) -1/3, (c) -1, (d) 1/3.

Question 32

• Series: 6, 12, 5, 11, 4, 10, 3, ?, ?
• Options: (a) 3, 9, (b) 9, 3, (c) 9, 2.

Question 33

• Series: 19, 38, 35, ?, 135, 810
• Options: (a) 146, (b) 140, (c) 137, (d) 142.

Question 34

• Series: 58, 67, 83, 108, ?
• Options: (a) 178, (b) 144, (c) 139, (d) 157.

Question 35

• Series: 3, 18, 90, 360, 1080, 2160, ?, 0
• Options: (a) 1080, (b) 2160, (c) 0, (d) 360.

Question 36

• Series: 3, 20, 38, 52, 75, 82, 114, ?
• Options: (a) 118, (b) 101, (c) 110.

Question 37

• Series: 990, 962, 934, 906, 878, ?
• Options: (a) 850, (b) 840, (c) 854.

Question 38

• Series: 146, 90, 56, 34, 22, ?
• Options: (a) 12, (b) 14, (c) 16.

Question 39

• Series: 21, ?, 45, 180, 185
• Options: (a) 41, (b) 42, (c) 33.

Question 40

• Series: 25, 26, 53, 160, 641, ?
• Options: (a) 3206, (b) 2908, (c) 3202, (d) 3403.

Trending Concept

• Number series-based questions are frequently asked in various SSC exams like CPO, 10+2, MTS, GD, JE, CGL, and Steno.