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Chapter 3: Set theory

Cardinal number

This is the number of elements in a set. It is written by the symbol n(A), n(A) means cardinal number of the set A.

par Claude Foumtum

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mathematics FROM 1

Chapter 6 Percentages

Definition Expressing fractions as percentages Percentage gain, loss and error Discount Discount

Chapter 2 The set of natural numbers and integers

Natural numbers Comparing of numbers Integers Arithmetic operation on integers

Chapter 3: Set theory

Definition Set language and notations Subset Cardinal number Types of sets Union and intersection of sets

Chapter 4: Fractions

Definition Types of fractions

Chapter 5: Decimals

Definition Expressing decimals into fractions Addition and subtraction of decimals Multiplication of decimals Division of decimals

Chapter 1: Number and numerals

What is a number? Numerals

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