287292
Descrição
FlashCards por jennycazabon, atualizado more than 1 year ago
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Criado por jennycazabon
aproximadamente 11 anos atrás
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| Questão | Responda |
| Sets | A set is a collection of well defined objects. The objects in the sets are called elements |
| # ? | #=cardinal number . Cardinal number is the umber of elements in a set ! |
| Fact | Elements can not be repeated |
| How are sets opened and closed ? | Sets are opened with a curly bracket { and closed with a curly bracket } |
| Null set ? | Has no elements written like {} |
| Fact | Null set and the set itself are always a subset |
| Improper subset | If one set has all the same elements of another |
| Proper subset | If one set is a subset of another set but does not have all the same elements as the set |
| Union & intersection | Union is what are in all the sets Instersection is what is in both sets only |
| Venn diagrams ? | Are used to represent sets |
| Universal set? | Is the rectangle that the sets are sometimes in ! This rectangle and the area of it Is known as the universal set |
| Complement | Every thing outside that set |
| Elements ? Subset? Equal to | E with a line is not an element E is an element of C with a line is not a subset of C is a subset of = with a line is not equal to = is equal to |
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