Cross multiplication – Examples and Formula In this lesson we will learn about cross multiplication, and also learn in brief how to useful cross multiplication to solve the problems. To understand the cross multiplication first we see the parts of a fraction.    Parts of a fraction We know that a fraction has a division bar and two numbers. […]

Read More →

Interior & Exterior angle of a polygon  In this lesson we will learn the, (1) Solutions of problems on interior and exterior angles of a polygon.  Example 1: Find the sum of all interior angles in a regular triangle (3-sided). Solution: Step 1: Write the formula Sum of interior angles of a polygon = (n-2) […]

Read More →

Whole numbers – Definition – Symbol and Examples What are Whole Numbers In our number system, various kinds of numbers such as; natural numbers, odd and even numbers, whole numbers, real numbers etc. In 628 A.D., first time the Indian mathematician and astronomer, Brahmagupta invented the number zero. Zero is used as a placeholder, it […]

Read More →

Variable – Definition and Example   Definition:              Variables are symbol or letters that used to represent for unknown numbers or values. simply a single letter, that represents a number called the value of the variable. m + n, here m and n are variables. 3x + y = 12, here x and […]

Read More →

 Co – Prime Numbers What are Co-prime Numbers? The pairs of numbers that do not have any common factor other than one are co-prime numbers. Let a and b are two positive integers are called co-prime numbers, if the only one 1 as their common factor. (a, b) is said to be a co-prime pair. […]

Read More →

Method of completing the square Below are steps to solve the quadratic equation by Completing Square. (1) First we set given equation all terms of the equation on one side, of equal sign and other side leaving zero. (2) Factor the non zero side. (3) Set each factor equal to zero. (4) Solve each of […]

Read More →

How to Find Median Value of Odd and Even Set of Data In this lesson we will learn how to calculate the median of a data set, when data set has odd and even numbers or observations. To learn the median of a data set, first we should understand what is median. (You can learn […]

Read More →