Mathematics

## Quadratic Equations Exercise 9.11 – Class X

Quadratic Equations Exercise 9.11 – Questions Find two consecutive positive odd numbers such that the sum of their squares is equal to 130. Find the whole number such that four times the number subtracted from three times the square of the number makes 15. The sum of two natural numbers is 8. Determine the numbers,… Continue reading Quadratic Equations Exercise 9.11 – Class X

9th mathematics exercise question with answer

## Factorization[class 9] – Full Chapter Exercise solutions

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

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

## Quadratic Equation Exercise 9.8 – Class X

Quadratic Equations – Exercise 9.8 – Questions: Form the quadratic equation whose roots are i) 3, 5 ii) 6, -5 iii) -3, 3/2 iv) 2/3 , 3/2 v) (2 + √3), (2 - √3) vi) (-3 + 2√5)(-3 - 2√5) B. If m and n are the roots of the equation x2 – 6x +… Continue reading Quadratic Equation Exercise 9.8 – Class X

9th mathematics exercise question with answer

## 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

9th mathematics exercise question with answer

## 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

9th mathematics exercise question with answer

## 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

## Statistics Exercise 1.5.4 – chapter Statistics – Class IX

Construct histogram of variable width for the following data: a) CI       25-29 30-35 36-40 41-50 51-56 57-60 f 10 24 15 20 12 16 Solution: CI 24.5-29 29.5-35.5 35.5 – 40.5 40.5-50.5 50.5-56.5 56.5-60.5 f 10 24 15 20 12 16 class width 5 6 5 10 6 4 length of  the rectangles 10 20… Continue reading Statistics Exercise 1.5.4 – chapter Statistics – Class IX