Discrete Structure:Cs (1st Lesson | pt. 1)

Question 1

To express that an element belongs to a set we use

Answer 1

∈

Question 2

To express that an element does NOT belong to a set we use

Answer 2

∉

Question 3

Collection of objects

Answer 3

Set

Question 4

Well defined, un ordered and distinct collection of elements

Answer 4

Sets

Question 5

each elements in the set satisfies a certain description

Answer 5

well dfined

Question 6

does not follow a certain order of appearance

Answer 6

unordered

Question 7

there could onyl be one item that has the element’s characteristic across the set

Answer 7

Distinct

Question 8

the number of elements inside a set

Answer 8

Cardinality

Question 9

2 ways of defining a set

Answer 9

Formal and Informal

Question 10

Uses normal words, or enumeration to determine the members of a set

Answer 10

Informal definition

Question 11

Use mathematical symbols and statemetns through induction to define what constitutes a particular set

Answer 11

Formal definition

Question 12

Formal or informal:

a = {1, 2, 3, 5}

Answer 12

informal

Question 13

Formal or Informal:

A = {Dog, Cat, Turtle, Cow}

Answer 13

Informal

Question 14

Formal or informal:

x = {2k + 1| k ∈ N}

Answer 14

Formal

Question 15

Formal or informal:

D = {students of Math class}

Answer 15

informal

Question 16

The concept of formally defining sets is called??

Answer 16

Set builder notation

Question 17

Combines components of 2 different sets

Answer 17

Union

Question 18

Containing only the element that are common to bothsets mentioned

Answer 18

Intersection

Question 19

Consists of all elements that are not in the subjected set

Answer 19

Complement

Question 20

Set containing the element of the element in the left side not the right or the element of A not B.

Answer 20

Difference

Question 21

Set containing the elements that are in either set BUT NOT BOTH

Answer 21

Symmetric difference

Question 22

Symbol for Union

Answer 22

U

Question 23

Symbol for Intersection

Answer 23

∩

Question 24

Symbol of complement

Answer 24

’

Question 25

Symbol of difference

Answer 25

\ or -

Question 26

Symbol of symetric difference

Answer 26

Δ