Average is one of the most frequently tested topics in the Quantitative Aptitude section of the RRB Clerk 2025 Exam. It is one of the most commonly used methods in solving other topics as well. Because of this, it has become extremely important to revise it as hardly a few days left for the exam. In this blog, we are providing the types of average questions asked, along with a free PDF to practice.
Download Average Questions for RRB Clerk Exam 2025
In this section, we are providing Average Questions for the RRB Clerk Exam 2025. Our experts curate these after analysing previous years’ patterns. Download Now and practice as many questions as you can.
Types of Average Questions in RRB Clerk 2025
In this section, we are discussing the types of questions asked in previous year RRB Clerk examinations.
Simple Average
Basic questions involving finding the average of given numbers.
Example patterns:
- Find the average of five consecutive numbers
- Average of the marks of students
- Average speed in individual trips
Weighted Average
Used when quantities carry different weights.
Common patterns include:
- Average marks of two groups with different strengths
- Cost of mixtures with varying proportions
- Average age of multiple subgroups
Replacement-Based Average
These questions appear when a value is replaced or added.
Examples:
- One number is replaced, but the average remains the same
- A new number increases the average
- A value is removed from the group
Finding a Missing Term
If the average and total number of items are provided, one missing item can be calculated by rearranging the formula.
Combined Average
Involves merging two different sets.
Examples:
- Average salary of two departments
- Average runs of two players combined
- Average temperature of two weeks
Application in DI
Average often appears indirectly in:
- Bar graphs
- Tabular DI
- Line charts
- Caselets
Important Formulas
1. Average = Sum of observations ÷ Number of observations
2. Total = Average × Number of items
3. New average when a number is added:
New Avg = (Old Total + New Value) ÷ New Count
4. New average when a number is removed:
New Avg = (Old Total – Removed Value) ÷ New Count
5. Weighted Average:
Weighted Avg = (a₁w₁ + a₂w₂ + … ) ÷ (w₁ + w₂ + …)
Strategy to Solve Average Questions Faster
In this section, we are providing the strategy to solve average questions faster and in a better way to score better.
Concept Clarity First
Memorise formulas and understand relationships between total, average, and number of items. Most mistakes occur due to misunderstanding rather than calculation.
Break the Question into Parts
If the problem looks lengthy, identify the useful data only. Ignore unnecessary information.
Use the Total Method
Instead of repeatedly applying the average formula, convert everything into totals.
Example:
Average = 40 for 15 students
Total = 40 × 15 = 600
Combine Groups Smartly
For the weighted average, always multiply the average by the number of items before adding.
Learn Shortcut Concepts
- The average of consecutive numbers is the middle number
- When one value increases the average by x, it exceeds the old average by x × number of items
- When one value is removed, use the total difference method
Maintain Calculation Speed
Practice multiplication and division of common numbers. Speed matters during prelims.
Common Mistakes to avoid while solving the questions
In this section, we are talking about the mistakes that students generally make while solving them
Misreading the Number of Items
If the question says total 12 observations, including the replaced one, ensure you maintain a correct count.
Confusion Between Average and Median
Average is the arithmetic mean, not middle value. Many students mix both.
Mixing Simple and Weighted Average
The average of 20 and 30 is NOT 25 unless their quantities are equal.
Calculation Errors
Tiny mistakes in multiplication create large errors in the final answer. Recheck totals when the numbers are big.
Ignoring DI-Based Averages
Students often revise only plain arithmetic averages, but DI-integrated averages are equally important.
Disclaimer
The strategies and tips shared above are based on previous year trends, commonly observed exam patterns, and standard reasoning practices. Actual questions in the RRB Clerk 2025 exam may vary in difficulty and format. Candidates are advised to use this content for guidance and practice purposes only and should complement it with regular mock tests and official notifications for the most accurate preparation.
Conclusion
In this article, we have provided the average questions for the RRB Clerk Prelims exam from a practice perspective. To solve questions from more such topics, you can buy our test series, where you can reattempt the full-length mock tests and get a Detailed Comparison with the Topper, compare your Time, Score, Accuracy, Correct/Wrong Answers, and even the Average Performance side-by-side.
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FAQs
Yes. Many questions combine Average with Percentage, Ratio, Profit–Loss, or Time–Speed. Practising mixed-concept sets improves your overall Quant accuracy.
A well-practised aspirant should complete each question within 25–35 seconds. Anything above 40 seconds usually means the approach needs refinement.
Repeated patterns include:
Change in average after adding/removing numbers
Average of two groups combined
Finding missing number using total–average relationship
These appear almost every year.
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