-
Can a value appear more than once in a set?
no
-
What does it mean for a set B to be a subset of set A?
all the values in B are contained in A
-
What is the union of the sets A and B?
a new set consisting of all the elements in A and all the elements in B
-
What is the intersection of the sets A and B?
a new set consisting of the elements that are in both A and B
-
If we have the sets A and B with the elements below, what are the elements
formed by the union of A and B?
A = {1, 2, 3}
B = {3, 4, 5}
{1, 2, 3, 4, 5}
-
If we have the sets A and B with the elements below, what are the elements
formed by the intersection of A and B?
A = {1, 2, 3}
B = {3, 4, 5}
{3}
-
Write the Python statement to create an empty set named s1.
s1 = set()
-
Write a Python statement to create the set s2 containing the values
1, 2 and 3, using a set literal.
s2 = {1, 2, 3}
-
If the variable s1 pointed to an empty set,
what would you see if you printed this variable?
set()
-
Write a statement that adds 5 to the set s1.
s1.add(5)