Quantitative Aptitude
Numerical reasoning for placement and entrance aptitude tests.
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Overview
Quantitative aptitude covers the arithmetic and numerical reasoning skills placement tests and entrance exams evaluate: number systems, percentages, interest, ratios, time/speed/distance and time/work, and reading data from tables and charts.
- What it is
- A set of numerical problem-solving techniques, not a programming language or piece of software -- the skill of translating a word problem into the right arithmetic or algebraic setup and solving it accurately under time pressure.
- Why it's used
- Most campus placement processes and many entrance exams include a quantitative aptitude section, since it is a fast, standardized way to assess numerical reasoning independent of a candidate's specific academic major.
- Where it fits
- Typically the first stage of a placement process, often alongside logical reasoning, before technical and HR interview rounds.
Core concepts
- Number systems and divisibility
- Percentages, profit/loss, and interest
- Ratio, proportion, and mixtures
- Time, speed, distance, and work
- Data interpretation
Example
Quantitative aptitude problems translate directly into small, checkable calculations like this one -- exactly the kind of function each lesson's exercises have you implement and test.
function percentageChange(oldValue, newValue) {
return Math.round(((newValue - oldValue) / oldValue) * 100 * 100) / 100;
}
// percentageChange(80, 100) -> 25Common use cases
- Campus placement aptitude test preparation
- Entrance exam numerical ability sections
- General numerical fluency for day-to-day estimation
Project ideas
- Build a small script that generates and checks your own practice problems for a topic you find weak