Quantitative Aptitude — Banking & SSC Exams
Why This Section Exists Separately
Quantitative Aptitude is tested as its own scored section in nearly every banking (SBI PO/Clerk, IBPS PO/Clerk, RBI), SSC (CGL, CHSL), and railway (RRB NTPC) exam — and it rewards dedicated, isolated practice more than any other section, since speed and formula recall compound with repetition.
Core Topic Map
| Topic | What's tested | Weightage (typical Prelims) |
|---|
|---|---|---|
| Simplification & Approximation | BODMAS, fraction/decimal shortcuts | 5–10 questions |
|---|---|---|
| Number Series | Missing/wrong term in a sequence | 5 questions |
| Percentage, Profit & Loss | Direct application + word problems | 5–8 questions |
| Simple & Compound Interest | Formula-based, occasionally combined with DI | 2–3 questions |
| Ratio, Proportion & Averages | Mixture/alligation crossover | 5 questions |
| Time, Speed & Distance / Time & Work | Relative speed, pipes & cisterns, work-efficiency ratios | 3–5 questions |
| Data Interpretation (DI) | Tables, bar/line/pie graphs, caselets | 10–15 questions (heavier in Mains) |
Speed Techniques That Matter Most
•Squares up to 30, cubes up to 15, tables up to 20 memorised cold — this alone saves meaningful time across an exam.
•Percentage-to-fraction conversion table (12.5% = 1/8, 16.67% = 1/6, etc.) for instant approximation in DI.
•Elimination in DI: for "which of the following is highest/lowest" questions, approximate first — exact calculation is rarely necessary.
Prelims vs Mains Difference
Prelims tests individual, standalone questions under tight per-question time pressure. Mains shifts weight toward Data Interpretation sets and combines quant with reasoning in "quant-based reasoning" hybrid questions — meaning Mains prep must specifically include mixed-question practice, not just topic-wise drilling.
Study Approach
1.Build formula recall to instant-recall level for each topic above before attempting timed sets.
2.Practice topic-wise first (10–15 questions per topic, no timer) to fix method, then switch to timed full-section mocks.
3.Track per-topic accuracy and speed separately — a topic with 90% accuracy but slow speed still needs more drilling before test day.