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SSC GD Constable Series Questions with Answers & Explanations

20 Series questions from the General Intelligence & Reasoning section of SSC GD Constable, each with the correct answer and a worked explanation. Try each question first, then tap Show answer to check. When you're ready, take the timed chapter-wise test to see your all-India rank.

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Question 1

What comes next in the series? I, L, O, R, ?

  1. AV
  2. BU
  3. CW
  4. DT
Show answer
Answer: (B) U Each letter moves 3 places forward in the alphabet.
Question 2

What comes next in the series? 16, 25, 36, 49, 64, ?

  1. A87
  2. B81
  3. C91
  4. D79
Show answer
Answer: (B) 81 The terms are consecutive perfect squares.
Question 3

What comes next in the series? I, L, O, R, ?

  1. AV
  2. BW
  3. CU
  4. DT
Show answer
Answer: (C) U Each letter moves 3 places forward in the alphabet.
Question 4

What comes next in the series? 7, 21, 63, 189, 567, ?

  1. A1695
  2. B1707
  3. C1700
  4. D1701
Show answer
Answer: (D) 1701 Each term is multiplied by 3.
Question 5

What comes next in the series? 12, 19, 26, 33, 40, ?

  1. A44
  2. B47
  3. C46
  4. D48
Show answer
Answer: (B) 47 Each term increases by 7.
Question 6

What comes next in the series? H, J, L, N, ?

  1. AR
  2. BQ
  3. CO
  4. DP
Show answer
Answer: (D) P Each letter moves 2 places forward in the alphabet.
Question 7

What comes next in the series? 6, 8, 12, 18, 26, ?

  1. A37
  2. B35
  3. C26
  4. D36
Show answer
Answer: (D) 36 The differences increase by 2 each time.
Question 8

What comes next in the series? C, G, K, O, ?

  1. AR
  2. BS
  3. CU
  4. DT
Show answer
Answer: (B) S Each letter moves 4 places forward in the alphabet.
Question 9

What comes next in the series? 64, 125, 216, 343, 512, ?

  1. A728
  2. B726
  3. C729
  4. D723
Show answer
Answer: (C) 729 The terms are consecutive perfect cubes.
Question 10

What comes next in the series? G, K, O, S, ?

  1. AX
  2. BY
  3. CV
  4. DW
Show answer
Answer: (D) W Each letter moves 4 places forward in the alphabet.

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Question 11

What comes next in the series? 9, 13, 23, 27, 37, ?

  1. A39
  2. B41
  3. C35
  4. D36
Show answer
Answer: (B) 41 The differences alternate between +4 and +10.
Question 12

What comes next in the series? B, D, F, H, ?

  1. AJ
  2. BK
  3. CL
  4. DI
Show answer
Answer: (A) J Each letter moves 2 places forward in the alphabet.
Question 13

What comes next in the series? 8, 27, 64, 125, 216, ?

  1. A349
  2. B344
  3. C337
  4. D343
Show answer
Answer: (D) 343 The terms are consecutive perfect cubes.
Question 14

What comes next in the series? A, E, I, M, ?

  1. AR
  2. BQ
  3. CP
  4. DS
Show answer
Answer: (B) Q Each letter moves 4 places forward in the alphabet.
Question 15

What comes next in the series? 3, 4, 6, 9, 13, ?

  1. A20
  2. B8
  3. C17
  4. D18
Show answer
Answer: (D) 18 The differences increase by 1 each time.
Question 16

What comes next in the series? G, J, M, P, ?

  1. AU
  2. BT
  3. CR
  4. DS
Show answer
Answer: (D) S Each letter moves 3 places forward in the alphabet.
Question 17

What comes next in the series? 3, 6, 12, 24, 48, ?

  1. A86
  2. B94
  3. C101
  4. D96
Show answer
Answer: (D) 96 Each term is multiplied by 2.
Question 18

What comes next in the series? 8, 9, 11, 14, 18, ?

  1. A20
  2. B26
  3. C23
  4. D21
Show answer
Answer: (C) 23 The differences increase by 1 each time.
Question 19

What comes next in the series? A, D, G, J, ?

  1. AL
  2. BN
  3. CM
  4. DO
Show answer
Answer: (C) M Each letter moves 3 places forward in the alphabet.
Question 20

What comes next in the series? 6, 13, 27, 55, 111, ?

  1. A228
  2. B223
  3. C221
  4. D222
Show answer
Answer: (B) 223 Each term is (previous × 2) + 1.

These are RankerClub practice questions written in the SSC GD Constable pattern. They are not official SSC/IBPS/RRB papers.

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