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SSC CGL Number Series Questions

44 questions on Number Series for SSC CGL. Each comes with the correct answer and a worked explanation.

Questions
44
Easy
25
Moderate
19

Number Series questions with solutions

Q1.Number SeriesModerate

Select the number that will come next in the following series. 49, 64, 81, 100, 121, ?

  1. (A)143
  2. (B)167
  3. (C)146
  4. (D)144
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Correct answer: (D) 144

The terms are the squares of consecutive numbers starting from 7. Applying the same pattern to the last given term 121 gives 144, which is the next number in the series.

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Q2.Number SeriesModerate

Select the number that will come next in the following series. 6, 10, 16, 24, 34, ?

  1. (A)47
  2. (B)44
  3. (C)45
  4. (D)46
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Correct answer: (D) 46

The differences between consecutive terms increase by 2 each time (4, 6, 8, …). Applying the same pattern to the last given term 34 gives 46, which is the next number in the series.

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Q3.Number SeriesEasy

Select the number that will come next in the following series. 8, 16, 24, 32, 40, ?

  1. (A)46
  2. (B)49
  3. (C)56
  4. (D)48
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Correct answer: (D) 48

Each term is obtained by adding 8 to the previous term. Applying the same pattern to the last given term 40 gives 48, which is the next number in the series.

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Q4.Number SeriesModerate

Select the number that will come next in the following series. 10, 14, 20, 28, 38, ?

  1. (A)62
  2. (B)48
  3. (C)50
  4. (D)52
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Correct answer: (C) 50

The differences between consecutive terms increase by 2 each time (4, 6, 8, …). Applying the same pattern to the last given term 38 gives 50, which is the next number in the series.

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Q5.Number SeriesEasy

Select the number that will come next in the following series. 11, 23, 35, 47, 59, ?

  1. (A)69
  2. (B)71
  3. (C)72
  4. (D)70
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Correct answer: (B) 71

Each term is obtained by adding 12 to the previous term. Applying the same pattern to the last given term 59 gives 71, which is the next number in the series.

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Q6.Number SeriesModerate

Select the number that will come next in the following series. 64, 81, 100, 121, 144, ?

  1. (A)167
  2. (B)169
  3. (C)194
  4. (D)170
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Correct answer: (B) 169

The terms are the squares of consecutive numbers starting from 8. Applying the same pattern to the last given term 144 gives 169, which is the next number in the series.

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Q7.Number SeriesEasy

Select the number that will come next in the following series. 23, 33, 43, 53, 63, ?

  1. (A)73
  2. (B)75
  3. (C)71
  4. (D)83
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Correct answer: (A) 73

Each term is obtained by adding 10 to the previous term. Applying the same pattern to the last given term 63 gives 73, which is the next number in the series.

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Q8.Number SeriesModerate

Select the number that will come next in the following series. 4, 8, 14, 22, 32, ?

  1. (A)42
  2. (B)46
  3. (C)44
  4. (D)45
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Correct answer: (C) 44

The differences between consecutive terms increase by 2 each time (4, 6, 8, …). Applying the same pattern to the last given term 32 gives 44, which is the next number in the series.

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Q9.Number SeriesEasy

Select the number that will come next in the following series. 5, 15, 45, 135, 405, ?

  1. (A)1217
  2. (B)2025
  3. (C)1215
  4. (D)1213
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Correct answer: (C) 1215

Each term is obtained by multiplying the previous term by 3. Applying the same pattern to the last given term 405 gives 1215, which is the next number in the series.

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Q10.Number SeriesModerate

Select the number that will come next in the following series. 25, 36, 49, 64, 81, ?

  1. (A)102
  2. (B)98
  3. (C)99
  4. (D)100
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Correct answer: (D) 100

The terms are the squares of consecutive numbers starting from 5. Applying the same pattern to the last given term 81 gives 100, which is the next number in the series.

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Q11.Number SeriesEasy

Select the number that will come next in the following series. 2, 4, 8, 16, 32, ?

  1. (A)64
  2. (B)62
  3. (C)63
  4. (D)96
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Correct answer: (A) 64

Each term is obtained by multiplying the previous term by 2. Applying the same pattern to the last given term 32 gives 64, which is the next number in the series.

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Q12.Number SeriesEasy

Select the number that will come next in the following series. 2, 4, 8, 16, 32, ?

  1. (A)62
  2. (B)64
  3. (C)66
  4. (D)96
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Correct answer: (B) 64

Each term is obtained by multiplying the previous term by 2. Applying the same pattern to the last given term 32 gives 64, which is the next number in the series.

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Q13.Number SeriesModerate

Select the number that will come next in the following series. 25, 36, 49, 64, 81, ?

  1. (A)101
  2. (B)100
  3. (C)98
  4. (D)102
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Correct answer: (B) 100

The terms are the squares of consecutive numbers starting from 5. Applying the same pattern to the last given term 81 gives 100, which is the next number in the series.

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Q14.Number SeriesModerate

Select the number that will come next in the following series. 6, 10, 16, 24, 34, ?

  1. (A)47
  2. (B)58
  3. (C)46
  4. (D)44
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Correct answer: (C) 46

The differences between consecutive terms increase by 2 each time (4, 6, 8, …). Applying the same pattern to the last given term 34 gives 46, which is the next number in the series.

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Q15.Number SeriesModerate

Select the number that will come next in the following series. 15, 17, 21, 27, 35, ?

  1. (A)47
  2. (B)45
  3. (C)46
  4. (D)55
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Correct answer: (B) 45

The differences between consecutive terms increase by 2 each time (2, 4, 6, …). Applying the same pattern to the last given term 35 gives 45, which is the next number in the series.

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Showing 15 of 44 questions. Start a practice set above to work through the rest.

Frequently asked questions

How many SSC CGL Number Series questions can I practise here?

44 questions — 25 easy and 19 moderate. 15 are shown on this page with answers and explanations, and the practice set draws from all of them.

How should I practise Number Series for SSC CGL?

Read through a few solved questions first to see the method, then take a timed practice set. Afterwards, check which questions you got wrong or spent longest on and redo those before moving on.