Simple Interest: Basic Concepts, Formulas
Learn the Basic Concepts and important formulas related to Simple Interest. These concepts and basic and advanced important formulas will help you in solving the problems of Simple Interest.
Quantitative Aptitude
Read these free Quantitative Aptitude study notes for free. These notes will help you to get good marks in exams like SSC, Banking, Railways, and other Competitive Exams.
Time and Work: Basic Concepts, Formulas
Learn the Basic Concepts and important formulas related to Time and Work. These concepts and basic and advanced important formulas will help you in solving the problems of Time and Work.
Pipes and Cisterns: Basic Concepts, Formulas
Learn the Basic Concepts and important formulas related to Pipe and Cistern. These concepts and basic and advanced important formulas will help you in solving the problems of Pipe and Cistern.
Ratio and Proportion: Basic Concepts, Formulas
Ratio and Proportion
What do you mean by Ratio? In a ratio of a:b, ‘a’ is called the first term or antecedent, and ‘b’ is called the second term or consequent.
What do you mean by Proportion?
i.e., a × d = b × c
Trigonometry: Basic Concepts, Formulas
Trigonometric Identities and Formulas
There are three systems of measuring Angles-
1. Circular System
Unit of Measurement is radian.
180 degree = π radians
2. Sexagesimal System (English System)
Right angle is divided into 90 equal parts called degree.
Unit of Measurement is degree.
3. Centesimal or French System
Right angle is divided into 100 equal parts.
Percentage: Basic Concepts, Formulas
A percent is derived from the Latin word ‘per centum’ which means ‘per hundred.
The percentage is a way of comparing quantities.
Percentages are basically numerators of fractions with denominator 100.
A percent is represented by the symbol – ‘%’.
Ex- 1% means 1 out of 100 or one-hundredths.
1% = 1/100 = 0.001
Interpreting Percentages
Ex- What do you mean by this statement. let say – “Raj saves 25% of his income.
Interpretation – It means 25 parts out of 100, or it means Raj is saving 25 rupees out of every 100 rupees that he earns.
Important Formula
% Change – (Increase or decrease)
℅change = (final value – Initial Value)*100/Initial Value
Important Mensuration Formula and Theroy
Important Mensuration Formula Mensuration is and important branch of mathematics. In this we basically calculate the perimeter, area, …
Average: Basic Concepts, Formulas
Important Concepts and Formulas. Average Formula, Definition-Number of quantities of the same kind is their sum divided by the number of the quantities.