CS Python Fundamentals Test 9 PRACTICE

When referring to two-dimensional lists, the phrase row-major means

• more rows than columns

• row first, then column

• many rows, only one column

• the rows are sorted, the columns are not

Click on the location [1][3] within the 2-D array shown here.

Click on the location [2][2] within the 2-D array shown here.

Based on your understanding of a row-major list in Python, how would a language process a column-major list?

• The list would be limited to one row

• The first index would be the column; the second index the row

• The element at [0][0] would refer to the last value in the list

• The row indexes decrease as the column indexes increase

Which of the following statements about lists is false?

• An element is the data stored in a specific location

• An index is a pointer to a specific location

• List row and column numbers begin with 0

• The first index in a 2-D list gives the column number

Which line of code correctly declares and initializes a 2-D list in Python?

• prime = [2,3], [5,7]

• prime = [2,3] + [5,7]

• prime = [2,3][5,7]

• prime = [[2,3], [5,7]]

Given the code shown here, what are the dimensions of the list? (rows by columns)

• 4x3

• 3x2

• 2x3

• 3x4

Given the code shown here, what is the output?

• 23

• 62

• 58

• 61

When this code executes, how many rows does the 2-D list contain?

• 2

• 3

• 4

• 5

Given the code shown here, what is output?

• 18

• 11

• 13

• 20