Class 9

subset is

• A subset is a set that contains only elements that are also in another set.
• A subset is a set that contains all elements from another set.
• A subset is a set that contains elements that are not in another set.
• A subset is a set that contains elements not in another set.

what is the differences between equal set and equivalent set?

• Equal sets have the same elements and cardinality, while equivalent sets have different elements.
• Equal sets have the same elements, while equivalent sets have the same cardinality.
• Equal sets have different elements, while equivalent sets have the same cardinality.
• Equal sets have the same cardinality, while equivalent sets have different elements.

Universal set

• Universal set is a set that contains only prime numbers.
• Universal set is a set that contains elements from a specific region.
• Universal set is a set that contains elements with odd indices.
• Universal set is a set that contains all the elements under consideration in a particular context.

the set which contain only one element is

• overlapping set

• infinite set

• Finite set

• Singleton set

overlapping set is

• A set that has elements in common with another set.
• A set that is completely separate from another set.
• A set that has no elements in common with another set.
• A set that is perfectly aligned with another set.

Example of disjoint set

• An example of disjoint sets could be two sets A = {red, green, blue} and B = {yellow, orange, purple}, where A and B have common elements.
• An example of disjoint sets could be two sets A = {1, 2, 3} and B = {3, 4, 5}, where A and B have common elements.
• An example of disjoint sets could be two sets A = {apple, banana, cherry} and B = {cherry, grape, kiwi}, where A and B have no common elements.
• An example of disjoint sets could be two sets A = {1, 2, 3} and B = {4, 5, 6}, where A and B have no common elements.

A= 〈1,2,3,4,5,6〉 Subset of set A

• B= 〈7,8〉

• C=〈2,3〉

• D=〈0.1〉

• E=〈11.2〉

Example of null set

• {empty}
• {}
• {null}
• {1, 2, 3}

Cardinality of T= 〈A,B,C,D,E,F〉

• n(T)=6

• n(T)=7

• n(T)=8

• n(T)=5

Difference between infinite set and finite set...

• The main difference between an infinite set and a finite set is the number of elements they contain.
• The shape of the elements
• The color of the elements
• The weight of the elements