We have great pleasure in presenting First edition “Quantitative Aptitude” written for students of UG courses. The related matters are written in a simple and easily understandable.
This volume is an attempt to pro vide the students with thorough understanding of Quantitative Aptitude. We have presented the subject matter in a systematic manner with liberal use of charts and diagrams where ever necessary so as to make it interesting and sustain students’ interest.
Contents –
Unit – 1 Quantitative Aptitude
Introduction
Number System
HCF
LCM
Percentage
Computation of Percentages
Ratios
Significance of Ratios
Equality of Ratios
Compounding Ratios
Duplicate of a Ratio
Triplicate of a Ratio
Sub–Duplicate of a Ratio
Profit and Loss
Cost Price
Selling Price
Market Price
Trade Discount
Cash Discount
Commission and Brokerage
Rate of Commission
Types of Commission Agents
Proportions
Significance of Proportions
Fourth Proportional
Third Proportional
Mean Proportional
Continued Proportions
Direct Proportions
Inverse Proportions
Review Questions
Practical Problems with Answer
Unit – 2 Commercial Arithmetic
Introduction
Simple Interest
Compound Interest
Principal Rate of Interest
Period by Simple and Compound Interest
Calculation of Compound Interest
(Quarterly, Half Yearly and Annually)
Annuities
Present Value of Annuity
Future Value of Annuity
Perpetuity
Bills Discounting
Trade Discount
Banker Discount
Bankers Gain
Review Questions
Practical Problems with Answer
Unit – 3 Business Equations
Introduction
Equation
Types of Equation
BODMAS Rule
Linear Equation
Simultaneous Equation
Elimination Method
Substitution Method
Review Questions
Practical Problems with Answer
Unit – 4 Matrices And Determinants
Introduction
Matrix
Definition of Matrix
Types Matrix
Addition of Matrices
Subtraction of Matrices
Multiplication of two Matrices
Determinants
Determinants of Square Matrix
Linear Equations by using Cramer’s Rule
Review Questions
Practical Problems with Answer
Unit – 5 Logical Reasoning
Introduction
Number Series
Alphabet Series
Letter Series
Coding
The Letter Coding
Decoding
Number Coding
Number to Letter Coding
Odd Man out Series
Seating Arrangements
Types of Seating Arrangements
Linear Arrangements
Circular Arrangements
Polygon Arrangements
Blood Relations
Direction Tests
Review Questions
Practical Problems with Answer
Skill Development Activities
