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