Q1
What is a set?
AA collection of distinct objects
BA single number
CA type of shape
DA type of operation
ICSEClass 6 (ICSE)MathematicsCh 10 · Topic 2
Practice and Revision - Sets
Let us practise and revise what we learned about sets. A set is a well-defined collection of distinct objects, like numbers, letters, or ite
Core concept
A set is written using curly brackets, like {1, 2, 3, 4}, listing all the elements (members) of the set.
How it works
Sets can be described by listing elements or by describing a property, like 'the set of even numbers less than 10'.
Why it matters
The number of elements in a set is called its cardinal number, so {1,2,3} has a cardinal number of 3.
Key detail
Understanding sets helps us organise and classify objects, forming a foundation for more advanced maths topics.
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Quick notes
• A set is a collection of distinct objects.
• Sets use curly brackets, like {1,2,3,4}.
• Elements are the members of a set.
• Sets can be listed or described by property.
• 'Even numbers less than 10' describes a set.
• The cardinal number is the count of elements.
• {1,2,3} has cardinal number 3.
• Sets help organise and classify objects.