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โ Mathematics โพ
๐ Class 9-10
Number System
Ch 1
Polynomials
Ch 2
Coordinate Geometry
Ch 3
Linear Equations
Ch 4
Triangles
Ch 7
Quadratic Equations
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Arithmetic Progressions
Ch 5
Trigonometry
Ch 8
Statistics
Ch 14
๐ Class 11-12
Sets & Functions
Ch 1
Complex Numbers
Ch 5
Conic Sections
Ch 11
Limits & Derivatives
Ch 13
Integration
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Probability
Ch 15
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Ch 9
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Ch 10
Work & Energy
Ch 11
Light โ Reflection
Ch 10
Electricity
Ch 12
๐งช Chemistry
Matter Around Us
Ch 1
Atoms & Molecules
Ch 3
Periodic Table
Ch 5
Chemical Reactions
Ch 1
Carbon Compounds
Ch 4
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Ch 5
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Ch 7
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Ch 9
Reproduction
Ch 8
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Ch 3
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Ch 4
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Ch 9
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Ch 2
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Ch 6
National Income
Ch 2
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Ch 3
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Ch 2
Marketing
Ch 11
Consumer Protection
Ch 12
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Formula
Echo Minimum Distance
Minimum distance = (Speed of sound ร 0.1s) / 2 = 17.15 m
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