SBI PO mains strategy: three hours, four sections

The prelims decides who stays in the race. The mains decides where you finish. Your mains score becomes 75 of the 100 marks in the final merit, so every mark here moves your rank.

It is also a different kind of test. The prelims is a one-hour sprint on familiar question types. The mains is three and a half hours of long puzzles, dense DI, sixty awareness questions and then three pieces of writing, typed when you are already tired. Preparing for it as "a longer prelims" is a common reason good prelims scorers fall short.

The structure, and what it rewards

Three things follow from this table.

• A DI question is worth four English questions. DI and reasoning deserve the most practice time.
• Awareness is the quickest source of marks. Sixty marks at 45 seconds a question; you either know it or you do not.
• Every row has a cut-off. The notification requires a minimum score in each of the four objective sections and in the descriptive paper, individually. Then an aggregate merit list calls up to about three times the vacancies to Phase III.

The cut-off rule changes the logic of "allocate by marks". You allocate your improvement time by marks, but you must also keep a safe floor in English and the descriptive test, which carry fewer marks.

Reasoning & Computer Aptitude: 50 minutes

1. Computer aptitude first. These are factual questions you answer in seconds or not at all.
2. Then the smaller reasoning sets: coded inequality, syllogism, blood relations, direction, data sufficiency.
3. Then puzzles, starting with the one whose clues fix positions most directly. Mains puzzles often combine three or four variables (floor, month, colour, profession), so draw a clean grid before you start.
4. Critical reasoning last. Arguments, assumptions and courses of action can be slow; attempt the shorter ones.

Mains puzzles are harder than prelims puzzles, and a single set can swallow fifteen minutes. Decide within three or four minutes whether a puzzle is closing. If it is not, move on and come back only if time remains.

Data Analysis & Interpretation: 45 minutes

1. Scan all sets for one or two minutes. Mark the sets with clean numbers and clear questions.
2. Solve the clean DI sets first, then data sufficiency and quantity comparison, which can be fast when the arithmetic is simple.
3. Leave calculation-heavy caselets for last.

Approximate wherever the options allow. If the options are 42%, 48%, 55% and 61%, you do not need the second decimal. Our arithmetic in DI guide shows how percentage, ratio and average questions hide inside sets.

Awareness: 45 minutes

1. First pass: answer every question you know, quickly. Do not stop to think.
2. Second pass: return to half-known questions and eliminate options.
3. Leave blind guesses. With a quarter-mark penalty and five options, a blind guess gains nothing on average.

Awareness is built over months, not in the mains week. Daily notes from the first month of preparation, revised in the weeks before the mains, are the only reliable method. The awareness plan sets out a routine.

English: 40 minutes

• Quick formats first: error spotting, fillers, phrase replacement, word usage.
• Choose RC passages by topic familiarity. A passage on banking or the economy is usually faster for a PO aspirant than one on philosophy.
• Watch for a long passage that consumes half the section. Set yourself a limit per passage before you start.

The descriptive test: 30 minutes, straight after the objective paper

Three tasks, each with a choice of two: an email, a situation analysis, and a report or précis. That leaves about ten minutes per task, so plan the half hour like this:

Choose topics by how quickly you can see a structure, not by which sounds more impressive. The descriptive test overview has formats and samples.

Worked example: what a mains score looks like

Suppose a candidate's objective attempts go like this:

Add a descriptive score of 18 out of 30 and the mains total is 132.5 out of 230. If the conversion is a straight proportion, that becomes 132.5 ÷ 230 × 75 ≈ 43.2 of the final 75.

Now suppose the same candidate spends the next month on DI and gets four more DI questions right with no extra wrong ones. That adds 8 marks to the mains, about 2.6 final marks. Four more English questions right would add only 2 mains marks. This is why you allocate improvement time by marks, while keeping English above its cut-off.

Stamina

Three hours of objective questions, followed immediately by typing, is exhausting. Concentration often fades in the last section and the descriptive test.

• Take full-length mains mocks, including the descriptive test, at least once a week in the final month.
• Practise at the time of day your exam slot is likely to be.
• Eat and hydrate the way you will on exam day; small things matter over three and a half hours.

After the prelims

The gap between the prelims and mains is short; in the 2026 cycle the notification scheduled the prelims for August and the mains for September. Start mains-level preparation before the prelims result.

Practice set

1. A candidate gets 20 DI questions right and 4 wrong. What is the net DI score? 40 − 2 = 38.
2. How much does a wrong answer cost in mains English? 0.125 marks (a quarter of 0.5).
3. Which is worth more to the total: 3 more reasoning questions right or 8 more English questions right? Reasoning: 3 × 1.5 = 4.5 marks, against 8 × 0.5 = 4 marks.
4. Why can't a candidate skip English entirely if they are strong in DI? Each section has its own cut-off.
5. A mains score of 115 out of 230 converts to how many of the final 75, assuming a straight proportion? 37.5 (half of 75).

What to do next

• Take one full mains mock with the descriptive test and record section-wise net scores.
• Mark the section closest to its likely cut-off and give it a fixed daily slot.
• Keep awareness notes going every day, including the weeks around the prelims.