Terminology
Venn
Lucky Dip
Random
Random
100
What is a Universal Set?
In set theory, it is generally the largest set or all of the things you are interested in examining.
100
What is a Venn Diagram?
Is a diagram that is used to represent sets. Usually made up of 2 circles and a box
100
Set notation:
U means?
UNION = ELEMENTS IN BOTH SETS. = AND
100
True or False.
We use Capital Letters to name Sets.
TRUE
100
2 x 10 x 3 -6
54
200
What is a set?
A set is a collection of things or objects that have at least one variable in common.
200
Why is it a visual representation?
Because it shows the universal set as a rectangle and how the sets are related between each other by showing them as circles.
200
∩ means?
It means the intersection of 2 sets.
A ∩ B , the intersection of A and B
200
Set A is the complement of Set B
A = {1, 3, 5, 7, 9}
B = {2, 3, 5, 7},
False
200
4 + 10 x 5
54
300
Define empty set
It is a set that contains no elements.
300
What is the intersection of a Venn diagram?
It is the elements that are in more than one set.
For example if you have set A and Set B, the intersection of A and B will contain the same elements of set A and Set B.
300
A = {1, 3, 5, 7, 9} and B = {2, 3, 5, 7},
what is A ∩ B?
{3, 5, 7}
300
If A = {1, 3, 5, 7, 9} and B = {2, 3, 5, 7},
what is A ∪ B?
{1, 2, 3, 5, 7, 9}
300
(40/10) x 10 - 2
38
400
True or False.
We use the name 'elements' to describe contents of Sets.
TRUE
400
What is the convention used when writing the elements of a set?
Chain brackets, commas, no duplicate elements
400
E = {0, 2, 4, 6, 8}
L = {0, 1, 2, 3, 4, 5, 6}
Write the intersection of sets E and L
E ∩ L = {0, 2, 4, 6}
400
From the above Venn diagram, what is the set (S ∩ T)?
{casey, drew, jade, glen}
S ∩ T = {casey, drew}
400
List all the counties in Connacht.
Galway, Leitrim, Mayo, Roscommon, Sligo
500
Draw a Venn Diagram.
Must be drawn correctly on whiteboard.
500
How many circles are in the box of a Venn diagram?
Usually 2 but sometimes can be 1 or 3
500
Draw the below on the whiteboard.
The Universal Set = { The letters of the alphabet} and A = {vowels}.
Must be drawn correctly.
500
If
P = The set of whole numbers less than 5
R = The set of factors of 6
Then what is (P ∩ R)?
Last step (∩ means "intersection", must be in both sets):
(P ∩ R) = {1, 2, 3 }
500
List all the counties in Leinster.
Carlow, Dublin, Kildare, Kilkenny, Laois, Longford, Louth, Meath, Offaly, Westmeath, Wexford, Wicklow.