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karush
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(c) $\displaystyle\frac{n(B\cup A')}{n(U)}=\frac{35}{100}=\frac{7}{20}$ |
karush said:so I have $B\cup A'$
(c)
$\displaystyle\frac{n(B\cup A')}{n(U)}=\frac{35}{100}=\frac{7}{20}$
A universal set, denoted by U, is a set that contains all the elements that are being considered in a given context. It is represented by the rectangle in a Venn diagram, and all other sets are subsets of the universal set.
Sets are represented by circles or ovals in a Venn diagram. Each circle or oval represents a specific set, and the elements that are common to two or more sets are placed in the overlapping regions.
The overlapping region of two sets represents the elements that are common to both sets. This region is also known as the intersection of the two sets.
A Venn diagram is a visual representation of sets and their relationships. It is used to show the similarities and differences between different sets and to understand the relationships between them.
The complement of a set is the elements that are not included in that set. In a Venn diagram, the complement of a set A is represented by the region outside of the circle or oval that represents set A.