what number is needed to complete the pattern below? 36 33 30 __ 24 21 18 15

Number serial is one of the almost common topics from the Quantitative bent department from which questions are asked in the various Bank exams.

There are three mains bank exams which are conducted in the country. These include:

1. IBPS
2. SBI Exams
3. RBI Exams

Reasoning Ability is one of the most important sections of any bank exam. In improver, a very scoring topic of the banking syllabus under the reasoning section is Number Series.

For upcoming depository financial institution exams like SBI PO, SBI Clerk, IBPS PO, IBPS Clerkand other Govt exams, aspirants should exist skillful in the Reasoning Ability section to excel in the test.

There are two posts for which the bank exams are generally conducted. This includes:

1. Bank PO
2. Bank Clerk

Candidates preparing for the various banking concern exams can refer to the below-mentioned links to ace the quantitative aptitude section:

What is Number Series

The arrangement of numbers in a certain social club, and in which some numbers are placed wrongly in the series and some numbers are missing is called a number serial.

Based on calculating the addition and subtraction of the numbers, candidates have to notice and detect the authentic number to the series of numbers.

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Steps To Solve Number Series

Here we are providing some steps on how to solve number series question that forms an important part of the reasoning section of the cyberbanking syllabus:

Step i: Screening

Candidates should first read the question advisedly. Sometimes reading the question carefully tin can exist enough for the candidate to solve the question.

Example:

1, iii, vii, 13, 21, 21, 31, ?

In this series, the terms are increasing past +2, +iv, +six, +8, +10. So, the next term will exist increased by 12. Hence, the next term is 31 + 12 = 43.

2, 4, eight, xvi, 32, 64, ?

In this serial, the terms are increasing by the multiples of 2. Therefore, the next term will be 64 * ii = 128.

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Step two: Check the pattern Decreasing or Increasing or Alternate.

Sometimes candidates neglect to decipher the pattern of the number series. During bank exam training, candidates should try to find out the trend of the series past looking at the series pattern. They tin can find information technology past checking the series whether it is decreasing or increasing or it is following an alternate pattern.

Example:

• 5, 10, 13, 26, 29, 58

Clearly, we tin can see that it is an increasing pattern.

• 729, 512, 343, 216, 125

Here, we can come across that the series is of decreasing design.

• four, -viii, sixteen, -32, 64, -128

This serial is neither increasing nor decreasing. So clearly, it is post-obit an alternate pattern.

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Footstep 3: Detect the rate of increase or decrease if the series is of increasing or decreasing blueprint.

During banking concern exam preparation, candidates should read the question advisedly and find whether the nature of the series is increasing or decreasing. Moreover, on the basis of that, they should notice the rate at which the terms are increasing or decreasing.

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For a better understanding every bit to how to solve a number series either wrong series or a missing number series, candidates can refer to the video given below:

Types of Questions on Number Series

Here are some of the series patterns which are discussed below:

• Based on subtraction and improver

In the series 4, 9, 14, 19, 24, 29 we can run across that it is an increasing series and the rate of increase is 9-iv = v.

In the series thirteen, 11, 9, 7, 5 we tin come across that it is a decreasing series and the charge per unit of decrease is 13-11 = two

• Based on division and multiplication

In the series 4, 8, 16, 32, 64, we can see that it is an increasing serial and the series is increasing by the multiple of two.

In the series 100, 50, 25, v, 1 nosotros can see that it is a decreasing series and the serial is decreasing as the terms are divided by 5.

• Based on square and cube

In the series 8, 27, 125, 343, 1331, 2197, we can come across that it is an increasing series. The series is the cube of the sequent prime numbers from 2 to xiii.

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Step 4: Bank check if the series is alternating

For alternating series, candidates demand to check whether the serial has two unlike operations, which are being alternately performed, or at that place is a mix of 2 series.

Example:

In the serial iv, nine 6, 18, 9, 27, thirteen, 36. This series is a mix of two series 9, eighteen, 27, 36 and 4, 6, 9, 13.

In the series 200, 600, 1200, 1600, 3200, 3600, 7200 two types of operations are going, 1 is the improver of 400 and the 2d is multiplication by 2.

Sample Questions – Number Series

Candidates must know that number serial is i of the easiest topics in the numerical ability section for bank exams and more exercise volition assist them score more and solve them within a shorter period of time.

Given below a few sample questions for the reference of candidates and to help them prepare for the upcoming banking sector examinations.

Directions (Q1 – Q3): For the given number series, observe what will come in place of the question mark (?)

Q i. two 10 fifty ? 1250 6250

1. 125
2. 450
3. 100
4. 250
5. 150

Answer: (4) 250

Solution:

2×5 = 10

10×5 = 50

50×v = 250

250×5 = 1250

1250×5 = 6250

Q 2. five 5 7.5 ? 37.5 112.5

1. 10.5
2. 12
3. 15
4. 15.5
5. 17

Answer: (three) 15

Solution:

5×1 = 5

5×1.5 = 7.5

7.5×2 = 15

15×2.5 = 37.5

37.5×3 = 112.five

Q 3. xv xix 28 ? 69 105

1. 44
2. 46
3. 45
4. 47
5. 48

Answer: (1) 44

Solution:

15 + ii^two = nineteen

19 + 3² = 28

28 + 4^two = 44

44 + 5^two = 69

69 + half dozen² = 105

Directions (Q4 – Q6): In the following series, find which of the given number is wrong and does not follow the pattern:

Q iv. 564 282 140 70.5 35.25

1. 564
2. 140
3. 35.25
4. 70.5
5. 281

Respond: (2) 140

Solution:

564/2 = 282

282/two = 141

141/2 = 70.v

70.five/2 = 35.25

Q 5. 633 624 598 534 409 193

1. 193
2. 409
3. 624
4. 534
5. 598

Answer: (3) 624

Solution:

633 – 2³ = 625

625 – 3³ = 598

598 – 4³ = 534

534 – 5ⁱⁱⁱ = 409

409 – half-dozen³ = 193

Q 6. 17 85 425 2115 10625 53125

1. 17
2. 85
3. 425
4. 2115
5. 53125

Answer: (4) 2115

Solution:

17×5 = 85

85×5 = 425

425×v = 2125

2125×5 =  10625

10625×5 = 53125

Questions in the form of wrong number series and missing number series are merely asked in the bank exams. Well-nigh importantly a candidate must improve their calculation speeds to exist able to answer the number series questions.

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Apart from the Quantitative Aptitude section, candidates must also focus every bit well on the other sections which are a part of the depository financial institution examination syllabus. Candidates can refer to the table given below for the detailed section-wise syllabus for banking concern exams:

Therefore, we hope that with lots of practice, these steps can help the candidates during their bank exam training to build the intuition that is required to solve number series problems during the depository financial institution exams.

Stay tuned with BYJU'S for more than updated content on banking concern exams preparation.

To scout the continued part of the video based on the conceptual noesis of Number series and the type of questions asked from this topic, candidates tin can check the video given below:

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Source: https://byjus.com/bank-exam/solve-number-series/

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