Class 9 > MATHEMATICS
1.1. Operation of Sets
1.2. Problems on Operation of Sets
1.3. Cardinality of Sets
1.4. Problems on Cardinality of Sets
2.1. Introduction to Profit and Loss
2.2. Problems Related to Profit and Loss
3.1. Commission
3.2. Tax
3.3. Discount
3.4. Commission and Tax - Dividend
4.1. Energy Billing Rules
4.2. Energy Bill Calculation
4.3. Water Bill Calculation
4.4. Rules of Telephone Charge and Bill Calculation
4.5. Taxi Bills
5.1. Introduction to Area and Area of Pathways - 1
5.2. Area of Pathways - 2
5.3. Cost of Plastering
5.4. Area of Four Walls and Ceiling
5.5. Problems on Area of Four Walls and Costing
6.1. Area and Volume of Solid Objects (Cuboid and Prism)
6.2. Problems Related to Area and Volume of Solid Objects
6.3. Cost Related to Volume
7.1. HCF and LCM
8.1. Basic Rules on Indices
8.2. Exponential Equation
9.1. Ratio, its Types and Problems on Ratio
9.2. Proportion and its Properties
9.3. Continued Proportion
10.1. Substitution Method to Solve Linear Equation
10.2. Elimination Method to Solve Linear Equation
10.3. Graphical Method to Solve Linear Equation
11.1. Solution of Quadratic Equation by Method of Factorization
11.2. Solution of Quadratic Equation by the Method of Completing Square
11.3. Solution of Quadratic Equation by Using Formula
12.1. Introduction and the Sum of Angles of Any Triangle is Equal to Two Right Angles
12.2. Exterior Angles of a Triangle is Equal to Sum of Two Opposite Interior Angles
12.3. The Perpendicular Drawn from the Vertex of an Isosceles Triangle Bisects the Angle
12.4. Condition for Congruency & Base Angles of an Isosceles Triangle are Equal
12.5. Sides Opposite to Equal Angles of a Triangle are Equal & Bisector Theorem
12.6. Mid-Points of Any Two Sides of a Triangle is Parallel to the Third Side
12.7. Problems Related to Triangle Theorem
13.1. Introduction to Parallelogram
13.2. If the Opposite Angles of a Quadrilateral are Equal, then It is a Parallelogram
13.3. The Diagonals of Parallelogram Bisect Each Other
13.4. Problems Related to Parallelogram
13.5. Miscellaneous Problems from Triangles and Parallelograms
14.1. Construction of Quadrilaterals
14.2. Construction of Rectangle
14.3. Construction of Parallelogram - 1
14.4. Construction of Parallelogram - 2
14.5. Construction of Rhombus
15.1. Introduction to Similarity
15.2. Problems Related to Similarity
15.3. Pythagoras Theorem
16.1. Equal Chords are Equidistant from Centre
16.2. Problems Related to Circle Theorem
17.1. Introduction to Trigonometry
17.2. Trigonometric Ratios of Standard Angles
17.3. Problems Related to Trigonometric Ratios
18.1. Introduction to Statistics and Line Graph
18.2. How to Draw a Pie Chart?
18.3. Histogram
18.4. How to Draw Ogive Curve?
18.5. Mean
18.6. Median, Mode and Quartiles
19.1. Introduction to Probability
19.2. Probability Scale and Empirical Scale
Water Bill Calculation
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