SSC CGL 2023 Exam-Tips & Tricks to Answer Number Series Questions

Want to master the art of answering Number Series Questions? Peculiarly, Number Series, which is a part of the General Intelligence and Reasoning section in SSC CGL 2023 exam, is a type of logical reasoning that involves finding the missing or wrong number in a sequence of numbers following some pattern. The series can be based on mathematical operations, place of letters in alphabetical order, and so on. There is no set pattern and each question may follow a different type of pattern or sequential arrangement of letters or digits, which candidates need to detect using their common sense and reasoning ability.

In this article, we have classified the number series reasoning section into several types based on various types of questions that are asked in various competitive examinations. Take a Free Mock Test to gauge your present knowledge of the Number Series.

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Explore the Different Kinds of Number Series & the Best Tips to Counter Them

Let’s dive into the various kinds of questions that you may encounter in this topic. Here are some of them:

1. Addition Series: This is where you add certain numbers following a pattern to get the next number in the series.
2. Subtraction Series: This is where you subtract certain numbers following a pattern to get the next number in the series.
3. Multiplication Series: This is where you multiply a specific number pattern to get the next number in the series.
4. Division Series: This is where you divide a specific number pattern to get the next number in the series.
5. Square Series: This is where each number is a perfect square of a specific number pattern.
6. Cube Series: This is where each number is a perfect cube of a specific number pattern.
7. Fibonacci Series: This is where the next number is the sum of the previous two numbers.
8. Alternating Series: This is where multiple number patterns are used in turns to form a series.
9. Mixed Operator Series: This is where multiple operations are used to get the next number in the series.
10. Arranging Number: This is where you need to rearrange the numbers as instructed and then answer the questions based on that.

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How to Ace Number Series Reasoning

Here are some tips and tricks to help you solve the questions related to Number Series reasoning:

Tip 1: Identify the process involved in the given series such as addition, subtraction, multiplication, division, and so on to find out the right answer.

Tip 2: For arranging type number series, rearrange the given series by using various processes to find out the right answer.

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SSC CGL 2023 Exam-Solved Examples on Number Series 

Here are some examples of how to successfully deal with questions on Number Series:

1. In the following question, select the missing number from the given series.

12, 19, 30, 43, ?

(1) 58

(2) 60

(3) 64

(4) 70

Ans: 2

Solution:

The logic followed here is:

The difference between the two consecutive numbers in the given series is the consecutive prime numbers starting from ‘7’.

12 + 7 = 19

19 + 11 = 30

30 + 13 = 43

43 + 17 = 60

So, ‘60’ is the missing term from the given series. The complete series is:

12, 19, 30, 43, 60

Hence, option b.

2. In the following question, select the missing number from the given series.

8, 4, 4, ?, 12, 30

(1) 7

(2) 9

(3) 8

(4) 6

Ans: 4

Solution:

The logic followed here is as shown below:

8 × 0.5 = 4

4 × 1 = 4

4 × 1.5 = 6

6 × 2 = 12

12 × 2.5 = 30

So, ‘6’ is the missing term from the given series. The complete series is:

8, 4, 4, 6, 12, 30

Hence, option d.

3. In the following question, select the missing number from the given series.

348, ?, 294, 267, 240, 213

(1) 321

(2) 333

(3) 309

(4) 319

Ans: 1

Solution:

The logic followed here is:

27 is subtracted from each number to get the next number.

348 – 27 = 321

321 – 27 = 294

294 – 27 = 267

267 – 27 = 240

240 – 27 = 213

So, ‘321’ is the missing term from the given series. The complete series is:

348, 321, 294, 267, 240, 213

Hence, option a.

4. In the following question, select the missing number from the given series.

24, 73, 137, ?, 318, 439

(1) 198

(2) 205

(3) 218

(4) 215

Ans: 3

Solution:

The logic followed here is:

The difference between the two consecutive numbers in the given series is the square of the consecutive numbers starting from ‘7’.

24 + 49 = 73

73 + 64 = 137

137 + 81 = 218

218 + 100 = 318

318 + 121 = 439

So, ‘218’ is the missing term from the given series. The complete series is:

24, 73, 137, 218, 318, 439

Hence, option c.

5. In the following question, select the missing number from the given series.

3888, 1296, ?, 144, 48, 16

(1) 545

(2) 432

(3) 412

(4) 423

Ans: 2

Solution:

The logic followed here:

Each number is divided by 3 to get the next number.

3888 ÷ 3 = 1296

1296 ÷ 3 = 432

432 ÷ 3 = 144

144 ÷ 3 = 48

48 ÷ 3 = 16

So, ‘432’ is the missing term from the given series. The complete series is:

3888, 1296, 432, 144, 48, 16

Hence, option b.

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Takeaway

Now that you are well-acquainted with the type of questions that come under the team Number Series coupled with the best samples, you can test your skills at Number Series by taking Mock Tests and improving your skills further. Take a Free Mock Test to start your journey of mastering the art of answering Number Series.

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