1.What is the value of the following expression:
sеt (rаngе (0, 20, 3)) & sеt (rangе (0, 20, 2))
{0, 6, 12, 18}
{0, 2, 3, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18}
{3, 9, 15}
{2, 3, 4, 8, 9, 10, 14, 15, 16}
. 2.
Which operators are applicable to sets? (Check all that apply.)
+
–
*
&
|
^
/
in
. 3.
Which expression correctly changes the tail (the last element) of the middle item in the following
tuple:
foo=(12, [“a”, “n”, “d”, “y”], set (“andy”))
foo[1][-1] = “a”
foo[0][0] = “a”
Tuples are immutable and cannot be changed.
The tuple foo has items of different data types and is illegal.
. 4.
Which data type cannot be used as a key in a dictionary?
list
int
float
string
. 5.
Which data structures could be used instead of the following dictionary without any loss of
information and functionality, including possible modifications both of element names and their
weights?
elements = {“H” : 1, “He” : 4, “Li” : 7, “Be” : 9}
names = [“H”, “He”, “Li”, “Be”]
weights =