Caselet DI: The New Favourite of Banking Exam

The IBPS RRB PO 2025 Prelims is just around the corner, scheduled for 22nd and 23rd November 2025. With only a few weeks left, Students are in full swing preparation mode. Unlike other banking exams, the RRB PO Prelims does not include an English section, which means your entire focus can be on Reasoning and Quantitative Aptitude. Among all topics in the Quant section, Caselets have emerged as the new favourite of examiners. What used to be a Mains-only topic is now appearing in Prelims as well, making it important for aspirants to master it. With the right strategy, clear understanding of arithmetic concepts, and consistent practice, Caselets can become your scoring strength and give you an edge over other students.

Caselet DI Trend in Banking Exams

Earlier, Caselet DI was mostly seen only in the Mains exams of SBI PO, IBPS PO, and RRB PO. Candidates preparing for Prelims rarely expected it, so most focused on traditional tables, graphs, and simple calculation-based DI. Now, the trend has changed. Even in Prelims, one set of Caselet DI can be asked. For example, in the SBI Clerk 2025 Prelims (September shift), a Caselet DI based on Mixture and Alligation appeared, catching many aspirants by surprise.

The reason behind this change is clear: examiners want to test more than just speed or memorized shortcuts. They aim to check conceptual clarity, logical application, and arithmetic understanding. This means aspirants who rely only on formulas or practice sets without understanding concepts may struggle.

For IBPS RRB PO 2025, this implies that you must be ready to tackle paragraph-based DI questions in both Prelims and Mains. These questions include a combination of multiple arithmetic topics like Ratio, Percentage, Profit & Loss, Partnership, and Time & Work into a single set. Being familiar with this pattern and practicing regularly will help you solve Caselet DI quickly and accurately, giving you an important advantage in the exam.

Why is Caselet DI Important for RRB PO?

In the Quantitative Aptitude section, DI has always been a scoring topic. Earlier, most questions were simple, taken from tables, bar graphs, or pie charts. But now, Caselet DI has become more important. Unlike traditional DI, Caselets is paragraph-based, combining multiple arithmetic topics like ratio, partnership, profit & loss, averages, and time-work in a single set. Since the data is hidden in words, you need to read carefully, extract information, and apply formulas correctly, which also tests your logical ability. Even Prelims exams have included Caselets, showing their rising trend. A caselet usually has 5 questions, so solving it correctly can give you quick marks and boost your chances of clearing the cutoff.

Most Expected Topics for Caselet DI in RRB PO 2025

Based on previous years’ exams and recent changes, here are the areas where Caselet DI questions are most likely to appear:

• Partnership & Profit Sharing
• Mixtures & Alligations
• Time, Speed & Distance / Boats & Streams
• Work & Time / Pipes & Cisterns
• Average & Ratio-Proportion
• Percentage & Profit-Loss

Study Resources To Crack the IBPS RRB PO 2025 Exam

To crack the IBPS RRB PO 2025 exam, candidates can start preparation with our study resources like mock tests, topic-wise tests, and mini mocks to enhance their accuracy and speed.

Example of New Pattern Caselet DI

Directions: Answer the questions based on the information given below.

Three friends Rohan, Rohit and Sohan spend 15%, 20% and 25%, respectively of their monthly income on food, and each of them save 20% of the remaining amount. Monthly salary of Sohan is twice the monthly salary of Rohan, and the monthly savings of Sohan is Rs. 1170 more than savings of Rohan. The total expenditure of Rohan and Rohit on food is 1050 more than that of Sohan on food.

Question 1: What is the average expenditure of Rohan and Rohit together on fooding?

A) Rs. 1875

B) Rs. 2485

C) Rs. 2775

D) Rs. 2965

E) None of these

Question 2: What is the ratio of monthly savings of Rohit to monthly savings of Sohan?

A) 5:2

B) 56:45

C) 51:47

D) 31:28

E) 4:3

Question 3: Savings of Rohan, Rohit and Sohan together is how much percent of the salaries of Rohit and Sohan together?

A) 23.5%

B) 21.5%

C) 19.5%

D) 27%

E) 17%

Question 4: By how much should Rohit’s monthly income be increased, so that the monthly expenditure of Rohit on fooding will be same as that of Sohan, provided Rohit spends the same percentage of income on fooding as he spent before?

A) Rs. 500

B) Rs. 1500

C) Rs. 2500

D) Rs. 1000

E) Rs. 3500

Question 5: If Sohan’s monthly income is increased by 25%, and the expenditure on fooding remains the same, then Sohan’s new savings will be ______.

A) Rs. 15000

B) Rs. 18500

C) Rs. 21000

D) Rs. 17500

E) None of these

Strategy to Prepare for Caselet DI in RRB PO

To prepare well for Caselet DI, the first step is to clear your arithmetic basics, as most questions are based on chapters like Ratio & Proportion, Percentage & Profit-Loss, Averages & Mixtures, Time & Work, and Speed, Distance & Time. Without a strong foundation, solving the Caselet becomes difficult. Next, make it a habit to practice 1 Caselet set daily. Start with easy sets, then move to moderate and difficult ones to gradually build confidence. Since the data is given in words, you also need to improve your reading skills, read carefully, note important numbers, and underline key details in rough work. At the same time, focus on speed and accuracy. If a Caselet seems too difficult, skip it initially and attempt easier questions first, then come back if time permits. Finally, make use of mock tests and previous year papers. Take sectional DI tests, solve previous RRB PO and Clerk papers, and analyze mistakes to understand trends and improve your performance.

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