Average is one of the most important and scoring topics in the Quantitative Aptitude section of the IDBI JAM Grade O Exam. Questions from this topic are simple, formula-based, and can be solved quickly with the right approach. If prepared well, Average can help you secure easy marks and improve your overall exam score. In this blog, we will cover the importance of Average, types of questions asked, preparation strategy, and how you can boost your performance with a free practice PDF.
Average Questions for IDBI Grade O Exam 2026
In this section, we are providing Average Questions. Our experts curate these after analysing previous years’ patterns. Download Now and practice as many questions as you can.
Basic Concept of Average
Average is defined as the sum of all observations divided by the number of observations.
Average = Sum of Observations\Number of Observations
Understanding this simple formula is the foundation for solving all types of Average questions.
Types of Average Questions Asked
1. Simple Average
These are direct questions where you need to find the average of given numbers.
Example:
Find the average of 10, 20, 30, 40, 50
Sum = 150 → Average = 150 ÷ 5 = 30
2. Missing Number Based Questions
In this type, one value is missing, and you need to find it using the average.
Example:
The average of 5 numbers is 20. Four numbers are 10, 15, 25, 30. Find the fifth number.
Total sum = 20 × 5 = 100 → Sum of known numbers = 80 → Missing number = 20
3. Weighted Average
Different groups have different weights or frequencies.
Example:
Average of 10 students = 60, average of 20 students = 70
Combined average = (10×60 + 20×70) ÷ 30
4. Average of Consecutive Numbers
Questions based on sequences of numbers.
Example:
Average of 5 consecutive numbers is always the middle number.
5. Increase/Decrease in Average
These questions involve adding or removing a value and observing the change in average.
Important Concepts to Focus On
To master Average questions, make sure you are comfortable with:
- Basic formulas and calculations
- Multiplication and division
- Concept of total sum = average × number
- Replacement concept (adding/removing values)
- Weighted average logic
Preparation Strategy for IDBI JAM 2026
1. Clear Your Basics
Start with understanding the core formula and its applications. Most questions revolve around simple logic.
2. Learn Shortcuts
Instead of lengthy calculations, use shortcut methods like:
- Average of consecutive numbers = middle value
- Net change method for replacement questions
3. Practice Regularly
Solve at least 15–20 Average questions daily. This will improve both speed and accuracy.
4. Focus on Accuracy
Since Average questions are easy, avoid silly mistakes. Accuracy is more important than attempting too many questions.
5. Use Mock Tests
Practice with mock tests to understand the exam pattern and time pressure.
Common Mistakes to Avoid
Many aspirants lose marks due to small errors. Avoid these:
- Forgetting the basic formula
- Calculation mistakes in multiplication/division
- Misinterpreting the question
- Ignoring units or values
- Spending too much time on one question
How to Score Maximum in Average Questions
To maximize your score:
- Attempt Average questions first in the exam
- Identify the type of question quickly
- Use shortcuts wherever possible
- Avoid overthinking simple problems
- Practice previous year questions
Final Thoughts
Average is a simple yet powerful topic that can boost your score in the IDBI JAM Grade O Exam. With clear concepts, regular practice, and smart strategies, you can easily master this topic. Remember, success in banking exams depends on picking the right topics and preparing them well. Average is definitely one of those topics that can give you quick and assured marks.
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