How to Master Speed and Accuracy for Number Series for RBI Grade B Exam?

The Number Series questions in the RBI Grade B exam can be both scoring and tough. This topic tests candidates’ ability to think logically and recognize or identify patterns. It is part of the Quantitative Aptitude section. These questions usually involve finding the missing term or identifying the wrong number in a sequence. You must master this topic, because even one mark can make a difference in a cut-throat competition like the RBI Grade B exam. So, if you’re weak in this area, you can turn it into your strength with regular practice and the right approach, you can turn this into a strength. In this blog, we’ll not only introduce the topic to you, but also supply you with the best sample questions packed with solutions to master this topic.

 

Common Types of Number Series in RBI Grade B

The first step that you need to follow to master Number Series is, you should know he common types of number series. Here are 5 types of series, to begin with:

1. Arithmetic Series: Numbers increase or decrease by a fixed value.
   Example: 5, 10, 15, 20, ?
   
2. Geometric Series: Each term is multiplied/divided by a fixed number.
   Example: 3, 6, 12, 24, ?
   
3. Square/Cube Series: Based on squares or cubes of natural numbers.
   Example: 1, 4, 9, 16, ?
   
4. Alternating Series: Different patterns are applied alternately.
   
5. Mixed Series: Combination of two or more patterns.
   

RBI Grade B Number Series Tips to Master in It

Here are the most important tips that you should follow to accurately answer all the questions related to the Number Series:

1. Spot the Pattern Quickly: First, check the difference between numbers. If that fails, look for multiplication, division, or alternate patterns.
   
2. Practice with a Timer: RBI Grade B is time-bound. Practice number series under time constraints to build speed.
   
3. Categorize Series Types: Make notes and examples for each type so you can recall strategies faster during the exam.
   
4. Start with Easy Questions: Build confidence by solving simpler patterns before advancing to complex ones.
   
5. Use Elimination: In a multiple-choice format, use answer options to work backward and eliminate wrong answers.
   

Sample Number Series Questions & Solutions

Now that you have a fair idea about the topic and want to master it, you need to go through different types of questions and their solutions to take a step further in mastering the art of solving them quickly. This is the reason why we’ve created a special PDF packed with solved examples and practice questions. And that too, is categorized by type. Check out the sample questions below and then download the PDF with solutions to polish your answering skills and skyrocket your speed.

1. A series is 160, 120, 80, 60, 52
If another series 280, __, __, __, m follows the same pattern as the given number series, find the value of m.

2. The following numbers form a series followed by a (?). Find the odd one out first and then find what will come in place of the question mark (?) according to the corrected series.
124, 131, 136, 144, 157, 170, ?

3. The following numbers form a series. Find the odd one out.
240, 480, 160, 640, 128, 768

4. The following numbers form a series. Find the odd one out.
178, 190, 164, 206, 146, 190

5. The following numbers form a series. Find the odd one out.
134, 142, 149, 165, 173, 184

Benefits of Solving Number Series Questions in RBI Bank Grade B Exam First

1. Quick Scoring Opportunity of 3-5 Marks

• Number series questions are usually straightforward once you recognize the pattern.
• If you’re well-practiced, you can solve each question in under a minute, racking up quick marks.

2. Boosts Confidence Early

• Starting with an easy or familiar topic helps build momentum and confidence.
• A few early correct answers can set the tone for the rest of the paper.

3. Clear Patterns = Less Ambiguity

• Unlike lengthy word problems, number series often follow specific, predictable rules (e.g., arithmetic, geometric, prime numbers, squares, etc.).
• If you spot the logic quickly, you can solve it without second-guessing.

4. Time Management Advantage

• Getting these out of the way early frees up more time for lengthier or tougher sections, like data interpretation or puzzles.
• Helps you avoid time pressure toward the end.

5. Low Risk of Negative Marking (if confident)

• If you’re trained well in number patterns, your accuracy in this section is generally high.
• That means less chance of negative marking compared to tricky logical reasoning problems.

Takeaway

There is no room for guesswork in mastering the art of solving the Number Series for the RBI Grade B exam. It is all about getting well-aware of different patterns and doing regular practice. This topic is scoring and can maximize your overall score. So, it’s important to develop a good strategy to solve all types of questions quickly and accurately. Regularity is the key to success. In the end, you can confidently solve even the toughest of the questions.

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