MATHS - SETS

Question 0

Element

Answer 0

The objects in the set are called elements

Question 1

Set

Answer 1

Is a collection of well defined objects

Question 2

Cardinal numbers

Answer 2

The number of elements in a set is called the cardinal numbers of the set.

Question 3

Cardinal numbers symbol

Answer 3

#

Question 4

Two sets are equal symbol

Answer 4

A=B

Question 5

Null set

Answer 5

If a set has no elements,then it’s called a null set or empty set

Question 6

Subset

Answer 6

If all of the elements of a set A are also in a set B,then we say that A is a subset of B.

Question 7

Subset Symbol

Answer 7

C

Question 8

Null set

Answer 8

{ }

Question 9

Union

Answer 9

The union of two sets is the set of elements contained in both sets.The union of the two sets A and B is written as AUB

Question 10

Intersection

Answer 10

The intersection of two sets is the set of elements that are common to both sets.It is written as A ( upside down “U” ) B

Question 11

Universal set

Answer 11

Is the set that contains all elements.Every set is a subset of the universal set.

Question 12

Universal set symbol

Answer 12

Rectangle and “U”

Question 13

Complement

Answer 13

Is every element in the universal set except for A

Question 14

Complement

Answer 14

A’

Question 15

X\Y

Answer 15

Is the set of elements that are in X but not in Y