SSC Quantitative Aptitude
Chapter Wise Notes

Number System & Arithmetic Basics

1

Number System

Types of numbers, place value, unit digit tricks, and remainder concepts.

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2

Simplification & Approximation

BODMAS rule, fraction simplification, and quick approximation techniques.

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3

HCF & LCM

Factorisation and division methods, and word problems on HCF/LCM.

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4

Divisibility Rules

Quick divisibility tests for 2 to 19, and their use in exam shortcuts.

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5

Squares, Cubes & Roots

Square/cube tables, square root & cube root shortcut methods.

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Commercial & Applied Arithmetic

6

Percentage

Percentage-fraction conversions, successive percentage change, and applications.

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7

Ratio & Proportion

Compounded ratios, proportion rules, and mixture-based ratio problems.

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8

Average

Simple, weighted, and combined averages, with age & replacement problems.

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9

Profit, Loss & Discount

Cost/selling price relations, successive discounts, and marked price tricks.

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10

Simple Interest

SI formula, rate-time-principal relationships, and shortcut techniques.

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11

Compound Interest

CI formula, half-yearly/quarterly compounding, and CI-SI relationship tricks.

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12

Partnership

Profit-sharing ratios for simple and compound partnerships.

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Time, Work & Motion

13

Time & Work

Efficiency-based approach, combined work, and wage-sharing problems.

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14

Pipes & Cisterns

Inlet/outlet pipe problems using the Time & Work efficiency method.

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15

Time, Speed & Distance

Speed conversions, relative speed, and average speed shortcut formulas.

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16

Boats & Streams

Upstream/downstream speed concepts and stream-current problems.

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17

Trains

Train-crossing-object and train-crossing-train problem patterns.

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Algebra & Geometry

18

Algebra (Basic Identities & Linear Equations)

Standard algebraic identities, factorisation, and solving linear equations.

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19

Geometry (Lines & Angles)

Angle pair rules, parallel line properties, and basic geometric theorems.

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20

Triangles

Congruence, similarity, centres of a triangle, and key triangle theorems.

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21

Quadrilaterals & Polygons

Properties of parallelograms, trapeziums, and regular polygon angle formulas.

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22

Circles

Chords, tangents, and angle properties of circles for exam-style questions.

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Mensuration, Trigonometry & Data Interpretation

23

Mensuration (2D)

Area and perimeter formulas for triangles, quadrilaterals, and circles.

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24

Mensuration (3D)

Volume and surface area formulas for cubes, cylinders, cones, and spheres.

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25

Trigonometry

T-ratios, standard angle values, and key trigonometric identities.

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26

Height & Distance

Angle of elevation/depression problems using trigonometric ratios.

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27

Data Interpretation (Tables, Bar Graphs, Pie Charts & Line Graphs)

Reading and calculating from tables, bar graphs, pie charts, and line graphs.

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