Linear Equations in Two Variables

Simultaneous Linear Equation: Elimination Method

Graphical Method of Solving Simultaneous Equations in Two Variables

Determinant Method or Cramer’s Rule Method of Solving Simultaneous Equations

Example on Determinant Method

Conditions of Consistency of Simultaneous Equations

Conditions of Consistency of Simultaneous Equations: Examples

Equations Reducible to a Pair of Linear Equations in Two Variables (Substitution Method)

Application of Simultaneous Equations

Arithmetic Progression

Sum of First n Terms of an A.P.

Solved Problems on Sum of First n Terms of an A.P.

Properties of an A.P.

Applications of an A.P.

Goods and Service Tax GST

Understanding GST Invoices

Input Tax Credit ITC

Understanding Shares

Brokerage and Taxes on Share Trading

Mutual Fund

Terms in Probability

Types of Events – Part 1

Types of Events – Part 2

Probability of an Event

Solved Problems on Probability-I

Solved Problems on Probability – II

Introduction to Statistics

Measures of Central Tendency

Mean of Grouped Frequency Distribution – Direct Method

Mean of Grouped Frequency Distribution – Assumed Mean Method

Mean of Grouped Frequency Distribution – Step Deviation Method

Median for Grouped Frequency Distribution

Mode of Grouped Frequency Distribution

Graphical Representation of Statistical Data: Histogram

Frequency Polygon and Frequency Curve: By Histogram

Frequency Polygon and Frequency Curve: Without using Histogram

Reading the Pie Diagram

Construction of Pie Diagram

Comparing the Measures of Central Tendency