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SBI Clerk Series Questions with Answers & Explanations

20 Series questions from the Numerical Ability section of SBI Clerk, 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.

Question 1

What comes next in the series? 10, 21, 43, 87, 175, ?

  1. A350
  2. B361
  3. C356
  4. D351
  5. E346
Show answer
Answer: (D) 351 Each term is (previous Γ— 2) + 1.
Question 2

What comes next in the series? 3, 10, 17, 24, 31, ?

  1. A38
  2. B35
  3. C36
  4. D40
  5. E44
Show answer
Answer: (A) 38 Each term increases by 7.
Question 3

What comes next in the series? 7, 13, 25, 31, 43, ?

  1. A55
  2. B52
  3. C44
  4. D49
  5. E50
Show answer
Answer: (D) 49 The differences alternate between +6 and +12.
Question 4

What comes next in the series? 12, 14, 18, 24, 32, ?

  1. A44
  2. B39
  3. C45
  4. D42
  5. E41
Show answer
Answer: (D) 42 The differences increase by 2 each time.
Question 5

What comes next in the series? 64, 81, 100, 121, 144, ?

  1. A169
  2. B168
  3. C170
  4. D166
  5. E163
Show answer
Answer: (A) 169 The terms are consecutive perfect squares.
Question 6

What comes next in the series? 5, 9, 16, 20, 27, ?

  1. A31
  2. B34
  3. C36
  4. D26
  5. E37
Show answer
Answer: (A) 31 The differences alternate between +4 and +7.
Question 7

What comes next in the series? 15, 18, 27, 30, 39, ?

  1. A43
  2. B37
  3. C52
  4. D44
  5. E42
Show answer
Answer: (E) 42 The differences alternate between +3 and +9.
Question 8

What comes next in the series? 15, 30, 60, 120, 240, ?

  1. A478
  2. B477
  3. C482
  4. D480
  5. E470
Show answer
Answer: (D) 480 Each term is multiplied by 2.
Question 9

What comes next in the series? 8, 17, 35, 71, 143, ?

  1. A277
  2. B290
  3. C288
  4. D289
  5. E287
Show answer
Answer: (E) 287 Each term is (previous Γ— 2) + 1.
Question 10

What comes next in the series? 7, 10, 17, 20, 27, ?

  1. A24
  2. B30
  3. C28
  4. D20
  5. E32
Show answer
Answer: (B) 30 The differences alternate between +3 and +7.

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Question 11

What comes next in the series? 4, 12, 36, 108, 324, ?

  1. A972
  2. B978
  3. C973
  4. D967
  5. E977
Show answer
Answer: (A) 972 Each term is multiplied by 3.
Question 12

What comes next in the series? 49, 64, 81, 100, 121, ?

  1. A141
  2. B144
  3. C154
  4. D138
  5. E142
Show answer
Answer: (B) 144 The terms are consecutive perfect squares.
Question 13

What comes next in the series? 10, 12, 16, 22, 30, ?

  1. A40
  2. B30
  3. C38
  4. D39
  5. E37
Show answer
Answer: (A) 40 The differences increase by 2 each time.
Question 14

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

  1. A12
  2. B21
  3. C24
  4. D16
  5. E18
Show answer
Answer: (E) 18 The differences increase by 1 each time.
Question 15

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

  1. A735
  2. B728
  3. C739
  4. D729
  5. E727
Show answer
Answer: (D) 729 The terms are consecutive perfect cubes.
Question 16

What comes next in the series? 11, 23, 47, 95, 191, ?

  1. A383
  2. B386
  3. C385
  4. D384
  5. E388
Show answer
Answer: (A) 383 Each term is (previous Γ— 2) + 1.
Question 17

What comes next in the series? 7, 10, 16, 25, 37, ?

  1. A50
  2. B47
  3. C55
  4. D46
  5. E52
Show answer
Answer: (E) 52 The differences increase by 3 each time.
Question 18

What comes next in the series? 5, 11, 17, 23, 29, ?

  1. A35
  2. B33
  3. C38
  4. D25
  5. E30
Show answer
Answer: (A) 35 Each term increases by 6.
Question 19

What comes next in the series? 125, 216, 343, 512, 729, ?

  1. A1010
  2. B990
  3. C1000
  4. D997
  5. E1006
Show answer
Answer: (C) 1000 The terms are consecutive perfect cubes.
Question 20

What comes next in the series? 13, 15, 22, 24, 31, ?

  1. A33
  2. B23
  3. C31
  4. D35
  5. E34
Show answer
Answer: (A) 33 The differences alternate between +2 and +7.

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

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