After studying the chapter Factorization[class 9], you learn to find the factors of simple monomial expressions, find the factors of binomial expressions, find the factors of some cubic expressions. 3.2.1 Introduction to Factorization[class 9]: Different methods of Factorization[class 9]: Method 1: Factorization[class 9] taking common factors: When each term of an expression has a common… Continue reading Factorization[class 9] – Full Chapter Exercise solutions

# Category: 9th mathematics exercise question with answer

## Multiplication of Polynomials – Full chapter – Class IX

After studying chapter Multiplication of Polynomials you learn to find the product of a monomial and a binomial; find the product of two polynomials; find the product of binomials using some special identities; prove some of the important identities; expand the binomial terms using the identities; solve problems under identities; prove problems under identities; prove… Continue reading Multiplication of Polynomials – Full chapter – Class IX

## Ratio and Proportion – Full Chapter – Class IX

After studying the chapter Ratio and Proportion and their general form; to understand and differentiate between different types of proportion; to acquire skills of writing proportion; to solve problems on time and work involving proportions; to apply proportion in day to day life situations. 2.4.1 Introduction to Ratio and Proportion In a ratio a :… Continue reading Ratio and Proportion – Full Chapter – Class IX

## Hire Purchase and Installment Buying – Class IX

After studying the chapter Hire Purchase and Installment Buying you learn the meaning of hire purchase and installment buying; to differentiate hire purchase and installment buying; to calculate interest in installment buying; to find out the equated monthly installment hire purchase. 2.3.1 Introduction to Hire Purchase and Installment Buying - Hire Purchase and Installment Buying You… Continue reading Hire Purchase and Installment Buying – Class IX

## Compound Interest – Full Chapter – Class IX

After studying the chapter Compound Interest you will learn to define compound interest; to distinguish simple interest and compound interest; to derive the formula for amount when interest is compounded; to calculate compound interest using ready rockers; to solve problems using the formula of compound interest. 2.2.1 Introduction – Compound Interest: In banks, insurance corporations… Continue reading Compound Interest – Full Chapter – Class IX

## Statistics[Class 9] – Full Chapter with Exercise

After studying the chapter Statistics[Class 9] you will be able to calculate range and coefficient of range for given data; to find out quartile deviation for regrouped and grouped data; to calculate mean deviation for regrouped data and grouped data; to draw histogram of varying width for inclusive and exclusive class intervals; to draw commutative… Continue reading Statistics[Class 9] – Full Chapter with Exercise

## Sets – Full Chapter with Exercise Solutions – Class IX

After studying the chapter Sets you will learn the concept of a set, to represent sets in roster method and set builder method; operations on sets like union, intersection, difference and symmetric difference; to use the formula for number of elements in a set and to solve simple word problems. 1.4.1 Introduction - Sets One… Continue reading Sets – Full Chapter with Exercise Solutions – Class IX

## Surds – Full Chapter Surds – Class IX

1.3.1 Introduction - Surds You have studied about the irrational numbers like √3, ∛7, ∜5 and so on. You have here square root, cube rot and forth root of numbers. There are also irrational numbers which cannot be written in such a form; for example √(3+∛2), π. In the Surds we study more about numbers… Continue reading Surds – Full Chapter Surds – Class IX

## Circles – Exercise 4.4.3 – Class IX[state board]

In the figure ∟ACB = 42˚. Find ∟x Solution: In the figure ∟AOB = 2∟ACB [angle at the centre = twice the angle at the circumference] ∟AOB = 2 * 42˚ = 84˚ ∟AOB = x = 84˚ In the figure ∟ABC is a circle with centre O and reflex ∟AOB = 250 ˚… Continue reading Circles – Exercise 4.4.3 – Class IX[state board]

## Circles – Exercise 4.4.2 – Class IX

In a circle whose radius is 8cm., chord is drawn at a point 3cm. from the centre of the circle. The chord is divided into two segments by a point on it. If one segment of the chord is 9cm .What is the length of the other segment? Solution: From the data given, Radius, OB… Continue reading Circles – Exercise 4.4.2 – Class IX