# Selina Solutions for Concise Mathematics Class 9 ICSE ## Concise Mathematics Class 9 ICSE

Author: Selina
Publisher: Selina Publishers
Language: English

Shaalaa provides solutions for Selina Class 9 and has all the answers for the questions given in Concise Mathematics Class 9 ICSE. Shaalaa is surely a site that most of your classmates are using to perform well in exams.

You can solve Concise Mathematics Class 9 ICSE textbook questions and use Shaalaa Selina Solutions for Class 9 Mathematics to verify your answers.

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We also provide solutions for other subjects to help you top the exams. These Selina solutions are specially curated with respect to the exam pattern and old papers. Find the best questions and solutions here. Click now to access it.

## Chapters covered in Selina Solutions for Concise Mathematics Class 9 ICSE

### Selina Class 9 Mathematics Chapter 1: Rational and Irrational Numbers solutions

Concepts covered in Rational and Irrational Numbers are Concept of Irrational Numbers, Concept of Rational Numbers, Concept of Real Numbers, Concept of Surds, Decimal Representation of Rational Numbers, Properties of Rational Numbers, Rationalisation of Surds, Simplifying an expression by rationalization of the Denominator

#### Selina Class 9 Mathematics Chapter 1: Rational and Irrational Numbers exercises

ExerciseNo. of questionsPages
Exercise 1 (A)124
Exercise 1 (B)4813 to 14
Exercise 1 (C)5221 to 22
Exercise 1 (D)122

### Selina Class 9 Mathematics Chapter 2: Compound Interest (Without using formula) solutions

Concepts covered in Compound Interest (Without using formula) are Compound Interest as a Repeated Simple Interest Computation with a Growing Principal, Concept of Compound Interest, Concept of Principal, Interest, Amount, and Simple Interest

#### Selina Class 9 Mathematics Chapter 2: Compound Interest (Without using formula) exercises

ExerciseNo. of questionsPages
Exercise 2 (A)1228
Exercise 2 (B)1233
Exercise 2 (C)1338
Exercise 2 (D)1038 to 39

### Selina Class 9 Mathematics Chapter 3: Compound Interest (Using Formula) solutions

Concepts covered in Compound Interest (Using Formula) are Concept of Compound Interest, Inverse Formula, Miscellaneous Problem, Use of Compound Interest in Computing Amount Over a Period of 2 Or 3-years, When the Interest is Compounded Half Yearly, When the Time is Not an Exact Number of Years and the Interest is Compounded Yearly

#### Selina Class 9 Mathematics Chapter 3: Compound Interest (Using Formula) exercises

ExerciseNo. of questionsPages
Exercise 3 (A)1844
Exercise 3 (B)1046
Exercise 3 (C)1050
Exercise 3 (D)1053 to 54
Exercise 3 (E)1054

### Selina Class 9 Mathematics Chapter 4: Expansions (Including Substitution) solutions

Concepts covered in Expansions (Including Substitution) are Algebraic Identities, Expansion of (a + b)3, Expansion of Formula, Methods of Solving Simultaneous Linear Equations by Cross Multiplication Method, Special Product

#### Selina Class 9 Mathematics Chapter 4: Expansions (Including Substitution) exercises

ExerciseNo. of questionsPages
Exercise 4 (A)2457 to 58
Exercise 4 (B)2660 to 61
Exercise 4 (C)1662 to 63
Exercise 4 (D)2364 to 65
Exercise 4 (E)2066

### Selina Class 9 Mathematics Chapter 5: Factorisation solutions

Concepts covered in Factorisation are Factorisation by Grouping, Factorisation by Taking Out Common Factors, Factorisation of a Quadratic Trinomial by Splitting the Middle Term, Method of Factorisation : Difference of Two Squares, Method of Factorisation : the Sum Or Difference of Two Cubes

#### Selina Class 9 Mathematics Chapter 5: Factorisation exercises

ExerciseNo. of questionsPages
Exercise 5 (A)2066 to 69
Exercise 5 (B)2571
Exercise 5 (C)3072 to 73
Exercise 5 (D)2074
Exercise 5 (E)2376

### Selina Class 9 Mathematics Chapter 6: Simultaneous (Linear) Equations (Including Problems) solutions

Concepts covered in Simultaneous (Linear) Equations (Including Problems) are Equations Reducible to Linear Equations, Linear Equations in Two Variables, Method of Elimination by Equating Coefficients, Methods of Solving Simultaneous Linear Equations by Cross Multiplication Method, Methods of Solving Simultaneous Linear Equations by Elimination Method, Simple Linear Equations in One Variable, Simultaneous Linear Equations

#### Selina Class 9 Mathematics Chapter 6: Simultaneous (Linear) Equations (Including Problems) exercises

ExerciseNo. of questionsPages
Exercise 6 (A)1479
Exercise 6 (B)2081
Exercise 6 (C)1285
Exercise 6 (D)1287 to 88
Exercise 6 (E)1890
Exercise 6 (F)1092
Exercise 6 (G)1394

### Selina Class 9 Mathematics Chapter 7: Indices (Exponents) solutions

Concepts covered in Indices (Exponents) are Handling Positive, Fraction, Negative and Zero Indices, Laws of Exponents, Simplification of Expressions, Solving Exponential Equations

#### Selina Class 9 Mathematics Chapter 7: Indices (Exponents) exercises

ExerciseNo. of questionsPages
Exercise 7 (A)2398
Exercise 7 (B)29100 to 101
Exercise 7 (C)19101

### Selina Class 9 Mathematics Chapter 8: Logarithms solutions

Concepts covered in Logarithms are Expansion of Expressions with the Help of Laws of Logarithm, Exponential to Logarithmic, Interchanging Logarithmic and Exponential Forms, Introduction of Logarithms, Laws of Logarithm, Logarithmic to Exponential, More About Logarithm, Power Law, Product Law, Quotient Law

#### Selina Class 9 Mathematics Chapter 8: Logarithms exercises

ExerciseNo. of questionsPages
Exercise 8 (A)38103 to 104
Exercise 8 (B)43106 to 107
Exercise 8 (C)20108
Exercise 8 (D)28110 to 111

### Selina Class 9 Mathematics Chapter 9: Triangles [Congruency in Triangles] solutions

Concepts covered in Triangles [Congruency in Triangles] are Concept of Triangles - Sides, Angles, Vertices, Interior and Exterior of Triangle, Congruence of Triangles, Criteria for Congruence of Triangles, Important Terms of Triangle, Relation Between Sides and Angles of Triangle

#### Selina Class 9 Mathematics Chapter 9: Triangles [Congruency in Triangles] exercises

ExerciseNo. of questionsPages
Exercise 9 (A)21122 to 123
Exercise 9 (B)22125 to 126

### Selina Class 9 Mathematics Chapter 10: Isosceles Triangles solutions

Concepts covered in Isosceles Triangles are Isosceles Triangle : If Two Angles of a Triangle Are Equal, the Sides Opposite to Them Are Also Equal., Isosceles Triangles, Isosceles Triangles : If Two Sides of a Triangle Are Equal, the Angles Opposite to Them Are Also Equal.

#### Selina Class 9 Mathematics Chapter 10: Isosceles Triangles exercises

ExerciseNo. of questionsPages
Exercise 10 (A)22131 to 132
Exercise 10 (B)31135 to 136

### Selina Class 9 Mathematics Chapter 11: Inequalities solutions

Concepts covered in Inequalities are If Two Angles of a Triangle Are Unequal, the Greater Angle Has the Greater Side Opposite to It., If two sides of a triangle are unequal, the greater side has the greater angle opposite to it., Inequalities in a Triangle, Of All the Lines, that Can Be Drawn to a Given Straight Line from a Given Point Outside It, the Perpendicular is the Shortest.

#### Selina Class 9 Mathematics Chapter 11: Inequalities exercises

ExerciseNo. of questionsPages
Exercise 1124142 to 143

### Selina Class 9 Mathematics Chapter 12: Mid-point and Its Converse [ Including Intercept Theorem] solutions

Concepts covered in Mid-point and Its Converse [ Including Intercept Theorem] are Equal Intercept Theorem, The Mid-point Theorem

#### Selina Class 9 Mathematics Chapter 12: Mid-point and Its Converse [ Including Intercept Theorem] exercises

ExerciseNo. of questionsPages
Exercise 12 (A)17150 to 151
Exercise 12 (B)15153 to 154

### Selina Class 9 Mathematics Chapter 13: Pythagoras Theorem [Proof and Simple Applications with Converse] solutions

Concepts covered in Pythagoras Theorem [Proof and Simple Applications with Converse] are Regular Polygon, Right-angled Triangles and Pythagoras Property

#### Selina Class 9 Mathematics Chapter 13: Pythagoras Theorem [Proof and Simple Applications with Converse] exercises

ExerciseNo. of questionsPages
Exercise 13 (A)12158 to 159
Exercise 13 (B)15163 to 164

### Selina Class 9 Mathematics Chapter 14: Rectilinear Figures [Quadrilaterals: Parallelogram, Rectangle, Rhombus, Square and Trapezium] solutions

Concepts covered in Rectilinear Figures [Quadrilaterals: Parallelogram, Rectangle, Rhombus, Square and Trapezium] are Concept of Quadrilaterals - Sides, Adjacent Sides, Opposite Sides, Angle, Adjacent Angles and Opposite Angles, Diagonal Properties of Different Kinds of Parallelograms, Introduction of Rectilinear Figures, Names of Polygons, Property: The Diagonals of a Rectangle Are of Equal Length., Property: The diagonals of a rhombus are perpendicular bisectors of one another., Property: The diagonals of a square are perpendicular bisectors of each other., Property: The Opposite Angles of a Parallelogram Are of Equal Measure., Property: The Opposite Sides of a Parallelogram Are of Equal Length., Types of Quadrilaterals

#### Selina Class 9 Mathematics Chapter 14: Rectilinear Figures [Quadrilaterals: Parallelogram, Rectangle, Rhombus, Square and Trapezium] exercises

ExerciseNo. of questionsPages
Exercise 14 (A)11168 to 169
Exercise 14 (B)20175 to 176
Exercise 14 (C)19181 to 183

### Selina Class 9 Mathematics Chapter 15: Construction of Polygons (Using ruler and compass only) solutions

Concepts covered in Construction of Polygons (Using ruler and compass only) are Constructing a Quadrilateral, Construction of a Rectangle When Its Length and Breadth Are Given., Construction of Parallelograms, Construction of Rhombus, Construction of Square, Construction of Trapezium, To Construct a Regular Hexagon

#### Selina Class 9 Mathematics Chapter 15: Construction of Polygons (Using ruler and compass only) exercises

ExerciseNo. of questionsPages
Exercise 1540190 to 1190

### Selina Class 9 Mathematics Chapter 16: Area Theorems [Proof and Use] solutions

Concepts covered in Area Theorems [Proof and Use] are Concept of Area, Figures Between the Same Parallels, Triangles with the Same Vertex and Bases Along the Same Line

#### Selina Class 9 Mathematics Chapter 16: Area Theorems [Proof and Use] exercises

ExerciseNo. of questionsPages
Exercise 16 (A)18196 to 198
Exercise 16 (B)10201
Exercise 16 (C)11201 to 202

### Selina Class 9 Mathematics Chapter 17: Circle solutions

Concepts covered in Circle are Arc and Chord Properties - If Two Arcs Subtend Equal Angles at the Center, They Are Equal, and Its Converse, Arc, Segment, Sector, Chord Properties - a Straight Line Drawn from the Center of a Circle to Bisect a Chord Which is Not a Diameter is at Right Angles to the Chord, Chord Properties - the Perpendicular to a Chord from the Center Bisects the Chord (Without Proof), Chord Properties - There is One and Only One Circle that Passes Through Three Given Points Not in a Straight Line, Concept of Circle - Centre, Radius, Diameter, Arc, Sector, Chord, Segment, Semicircle, Circumference, Interior and Exterior, Concentric Circles, Converse: The chords of a circle which are equidistant from the centre are equal., Theorem: Equal chords of a circle are equidistant from the centre.

#### Selina Class 9 Mathematics Chapter 17: Circle exercises

ExerciseNo. of questionsPages
Exercise 17 (A)10210 to 211
Exercise 17 (B)10217
Exercise 17 (C)8220 to 221
Exercise 17 (D)10221

### Selina Class 9 Mathematics Chapter 18: Statistics solutions

Concepts covered in Statistics are Class Intervals and Class Limits, Concepts of Statistics, Cumulative Frequency Table, Frequency, Frequency Distribution Table, Graphical Representation of Continuous Frequency Distribution, Graphical Representation of Data, Tabulation of Data, Variable

#### Selina Class 9 Mathematics Chapter 18: Statistics exercises

ExerciseNo. of questionsPages
Exercise 18 (A)24227 to 228
Exercise 18 (B)6233

### Selina Class 9 Mathematics Chapter 19: Mean and Median (For Ungrouped Data Only) solutions

Concepts covered in Mean and Median (For Ungrouped Data Only) are Concept of Median, Mean of Ungrouped Data, Properties of Mean

#### Selina Class 9 Mathematics Chapter 19: Mean and Median (For Ungrouped Data Only) exercises

ExerciseNo. of questionsPages
Exercise 19 (A)21238 to 239
Exercise 19 (B)8241
Exercise 19 (C)17241

### Selina Class 9 Mathematics Chapter 20: Area and Perimeter of Plane Figures solutions

Concepts covered in Area and Perimeter of Plane Figures are Area of a General Quadrilateral, Area of Circle, Circumference of a Circle, Concept of Perimeter, Perimeter of Triangles, Some Special Types of Triangles - Equilateral and Isosceles Triangles, Types of Quadrilaterals

#### Selina Class 9 Mathematics Chapter 20: Area and Perimeter of Plane Figures exercises

ExerciseNo. of questionsPages
Exercise 20 (A)14247 to 248
Exercise 20 (B)39254 to 257
Exercise 20 (C)25261 to 262
Exercise 20 (D)11263

### Selina Class 9 Mathematics Chapter 21: Solids [Surface Area and Volume of 3-D Solids] solutions

Concepts covered in Solids [Surface Area and Volume of 3-D Solids] are Cost of an Article, Cross Section of Solid Shapes, Flow of Water ( or any other liquid ), Introduction of Solids, Surface Area of a Cube, Surface Area of a Cuboid, Surface Area of Cylinder

#### Selina Class 9 Mathematics Chapter 21: Solids [Surface Area and Volume of 3-D Solids] exercises

ExerciseNo. of questionsPages
Exercise 21 (A)16269
Exercise 21 (B)10273
Exercise 21 (C)10274

### Selina Class 9 Mathematics Chapter 22: Trigonometrical Ratios [Sine, Consine, Tangent of an Angle and their Reciprocals] solutions

Concepts covered in Trigonometrical Ratios [Sine, Consine, Tangent of an Angle and their Reciprocals] are Concept of Perpendicular, Base, and Hypotenuse in a Right Triangle, Notation of Angles, Reciprocal Relations, Trigonometric Ratios and Its Reciprocal

#### Selina Class 9 Mathematics Chapter 22: Trigonometrical Ratios [Sine, Consine, Tangent of an Angle and their Reciprocals] exercises

ExerciseNo. of questionsPages
Exercise 22 (A)20279 to 280
Exercise 22 (B)30285 to 287

### Selina Class 9 Mathematics Chapter 23: Trigonometrical Ratios of Standard Angles [Including Evaluation of an Expression Involving Trigonometric Ratios] solutions

Concepts covered in Trigonometrical Ratios of Standard Angles [Including Evaluation of an Expression Involving Trigonometric Ratios] are Trigonometric Equation Problem and Solution, Trigonometric Ratios of Some Special Angles

#### Selina Class 9 Mathematics Chapter 23: Trigonometrical Ratios of Standard Angles [Including Evaluation of an Expression Involving Trigonometric Ratios] exercises

ExerciseNo. of questionsPages
Exercise 23 (A)37291 to 292
Exercise 23 (B)17293
Exercise 23 (C)43297 to 298

### Selina Class 9 Mathematics Chapter 24: Solution of Right Triangles [Simple 2-D Problems Involving One Right-angled Triangle] solutions

Concepts covered in Solution of Right Triangles [Simple 2-D Problems Involving One Right-angled Triangle] are Solution of Right Triangles

#### Selina Class 9 Mathematics Chapter 24: Solution of Right Triangles [Simple 2-D Problems Involving One Right-angled Triangle] exercises

ExerciseNo. of questionsPages
Exercise 2434303 to 304

### Selina Class 9 Mathematics Chapter 25: Complementary Angles solutions

Concepts covered in Complementary Angles are Complementary Angles, Complementary Angles for Sine ( Sin ) and Cosine ( Cos ), Complimentary Angles for Secant ( Sec ) and Cosecant ( Cosec ), Complimentary Angles for Tangent ( Tan ) and Contangency ( Cot ), Trigonometric Ratios of Complementary Angles

#### Selina Class 9 Mathematics Chapter 25: Complementary Angles exercises

ExerciseNo. of questionsPages
Exercise 2533310

### Selina Class 9 Mathematics Chapter 26: Co-ordinate Geometry solutions

Concepts covered in Co-ordinate Geometry are Cartesian System, Coordinate Geometry, Co-ordinates of Points, Dependent and Independent Variables, Finding the Slope and the Y-intercept of a Given Line, Graph, Graphs of Linear Equations, Inclination and Slope, Ordered Pair, Plotting of Points, Quadrants and Sign Convention, Y-intercept

#### Selina Class 9 Mathematics Chapter 26: Co-ordinate Geometry exercises

ExerciseNo. of questionsPages
Exercise 26 (A)29315 to 316
Exercise 26 (B)46320
Exercise 26 (C)35323

### Selina Class 9 Mathematics Chapter 27: Graphical Solution (Solution of Simultaneous Linear Equations, Graphically) solutions

Concepts covered in Graphical Solution (Solution of Simultaneous Linear Equations, Graphically) are Graph of a Linear Equation in Two Variables, Methods of Solving Simultaneous Linear Equations by Graphical Method

#### Selina Class 9 Mathematics Chapter 27: Graphical Solution (Solution of Simultaneous Linear Equations, Graphically) exercises

ExerciseNo. of questionsPages
Exercise 27 (A)19326
Exercise 27 (B)18329

### Selina Class 9 Mathematics Chapter 28: Distance Formula solutions

Concepts covered in Distance Formula are Circumcentre of a Triangle, Distance Formula

#### Selina Class 9 Mathematics Chapter 28: Distance Formula exercises

ExerciseNo. of questionsPages
Exercise 2836335

## Selina Solutions for Concise Mathematics Class 9 ICSE

Class 9 Selina solutions answers all the questions given in the Selina textbooks in a step-by-step process. Our Mathematics tutors have helped us put together this for our Class 9 Students. The solutions on Shaalaa will help you solve all the Selina Class 9 Mathematics questions without any problems. Every chapter has been broken down systematically for the students, which gives fast learning and easy retention.

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