121 Week 1 - Sets

Question 1

Empty set

Answer 1

A set with no elements inside it

Question 2

Disjoin sets

Answer 2

2 or more sets with no elements in common. 2 sets are disjoin if intersect is the empty set

Question 3

Equal sets

Answer 3

2 sets which have identical elements

Question 4

Not equal sets

Answer 4

2 sets which do not have identical elements

Question 5

Cardinality

Answer 5

The number of elements in a set. A set within the set is counted as 1 element.

Question 6

Union

Answer 6

Selects elements in either sets

Question 7

Intersect

Answer 7

Selects elements that are in all sets

Question 8

Difference

Answer 8

Selects elements that are only in the first set, but not in the second set.

Question 9

Cartesian Product

Answer 9

Finds all possible combinations of elements from 2 sets

Question 10

Subset

Answer 10

A set A is a subset of set B if all elements in A are also in B

Question 11

Proper subset

Answer 11

A set A is a subset of set B if all elements in A are also in B and there is at least 1 element in B that are not in A

Question 12

Superset

Answer 12

A set B is a superset of set A if every element of A is also an element of B

Question 13

Proper superset

Answer 13

A set B is a superset of set A if every element of A is also an element of B and there is at least 1 element in B which is not in A

Question 14

Universal set

Answer 14

A non-empty set of all of the possible elements relevant to the solution of a problem

Question 15

Complement set

Answer 15

The difference between the universe and a given set (U-A or comp(A) )