19September 2026
Today’s poster
What to note today
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Study Material
Quantitative Aptitude
Quantitative Aptitude is the section that decides most competitive exam results, because it is the one where speed and accuracy diverge most sharply between candidates.
The topics below are written to be read in order. Number System and Percentages come first because almost everything else is built on them — Profit & Loss is percentages applied to trade, and Time & Work and Time, Speed & Distance are both ratio problems in disguise.
Current affairs · 19 September 2026
Today’s current affairs, checked at the source
Every item is dated, read on the conducting body’s or ministry’s own site, and written with the question it becomes. Read today’s items, take the quiz, or download the month as a PDF.
6 topics written
Read these in order
Each topic is a complete lesson — concepts, formula tables, worked examples and practice questions with explanations.
01Number System8 sections · 12 practice questions · 18 min read02Percentages9 sections · 16 practice questions · 22 min read03Profit & Loss8 sections · 16 practice questions · 20 min read04Ratio & Proportion8 sections · 16 practice questions · 20 min read05Time & Work8 sections · 16 practice questions · 20 min read06Time, Speed & Distance8 sections · 16 practice questions · 21 min read
Weighting
Where Quantitative Aptitude marks actually sit
A syllabus lists topics with equal visual weight, and no paper treats them that way. The table below collects what each Quantitative Aptitude lesson records about the exams that examine it, so the reading order on this page can be checked against the exams you are actually sitting.
Counts are ranges observed across cycles rather than promises. The notification for your cycle is what fixes the paper, and a topic can move.
| Topic | Examined most in | Typical volume | Lesson |
|---|---|---|---|
| Number System | SSC CGL / CHSL Tier 1; Banking Prelims; RRB NTPC / Group D | 2–4 questions | 18 min · 12 questions |
| Percentages | SSC CGL / CHSL Tier 1; Banking Prelims & Mains; RRB NTPC / Group D | 3–5 direct questions | 22 min · 16 questions |
| Profit & Loss | SSC CGL / CHSL Tier 1; Banking Prelims & Mains; RRB NTPC / Group D | 3–5 questions | 20 min · 16 questions |
| Ratio & Proportion | SSC CGL / CHSL Tier 1; Banking Prelims & Mains; RRB NTPC / Group D | 2–4 direct questions | 20 min · 16 questions |
| Time & Work | SSC CGL / CHSL Tier 1; Banking Prelims & Mains; RRB NTPC / Group D | 2–4 questions | 20 min · 16 questions |
| Time, Speed & Distance | SSC CGL / CHSL Tier 1; Banking Prelims & Mains; RRB NTPC / Group D | 3–5 questions | 21 min · 16 questions |
How to use the table rather than read it
Find the rows naming the exam you are preparing for, and study those first regardless of where they sit in the reading order above — the order on this page is pedagogical, built so each lesson can rest on the one before it, and it is not a priority list. Where a topic you are weak at also carries the highest volume in your paper, that row is the whole of your next fortnight.
Method
How to study quantitative aptitude
This is a skill subject, not a knowledge subject. Reading a method teaches you to recognise it; only solving builds the ability to use it under a clock.
The sequence that works
- Fix arithmetic fluency before anything else. Percentage, ratio and fraction equivalents held instantly. Data interpretation, profit and loss, interest and mixtures are all built on them.
- Read a topic once, then solve twenty questions. Before re-reading anything. Re-reading feels productive and teaches recognition rather than capability.
- Move to mixed sets once accuracy on a topic is stable. Topic sets tell you which method to use; the exam does not.
- Drill calculation separately, fifteen minutes daily. Tables, squares, cubes, fraction-to-percentage conversions. Unglamorous, and the single highest-return habit in the subject.
What separates fast candidates
- They recognise the shape of a problem before reading it fully — "two rates, working together" rather than "a time and work question".
- They convert fractions to percentages without computing, which is most of the speed advantage in data interpretation.
- They abandon a question that has not yielded within their limit, rather than sinking three minutes into it.
- They practise on paper without a calculator, because that is how the exam is sat.
Questions
Quantitative Aptitude — FAQs
How long does it take to build quantitative aptitude from a weak base?
Plan on three to four months of daily work to move from weak to competitive, and expect the first six weeks to show very little. The reason is that arithmetic fluency has to be rebuilt before topic methods produce any speed gain: a candidate who cannot convert a fraction to a percentage instantly will be slow at data interpretation no matter how well they understand the topic. Fifteen minutes of calculation drill a day alongside topic study is what compresses that timeline; nothing else does.
Should I learn shortcuts or the standard method first?
The standard method first, always, and then the shortcut for the question forms you have met often enough to recognise. A shortcut learned without the method behind it is applied to questions it does not fit, which produces confident wrong answers — the most expensive kind where negative marking applies. Once the method is secure, the shortcut is a compression of something you already understand and you will notice when it does not apply.
Which topics carry the most marks?
Percentages and ratio, by a distance, because they are not only examined directly but sit underneath profit and loss, interest, discount, mixtures and most data interpretation. Time and work and time, speed and distance are ratio problems in different clothing. The table above shows what each lesson records for the exams that set it, and the practical implication is the same across papers: fix the arithmetic base before spending time on the topics that feel more advanced.
Is a calculator allowed?
In most government recruitment papers it is not, and in several entrance tests an on-screen calculator is provided with restrictions. This matters more than it sounds: practice done with a calculator builds none of the mental arithmetic the paper requires, so practise on paper, without one, from the beginning. Check your own notification for what is permitted in your examination before assuming either way.
How many questions should I solve per topic?
Enough that you stop having to decide which method applies — for most topics that is somewhere between fifty and a hundred questions, and it is a far better target than a number of hours. Read the topic once, solve twenty, then return to the explanation for whatever the twenty exposed. Re-reading before solving feels productive and builds recognition rather than capability.
Read the concept, then test it the same day
Every topic ends with practice questions, and a full mock is the fastest way to find out which ones actually stuck.
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