Question

if we have defined the same list: my_list = 1,2,3,4,5 which of the following will get the last element from the list? (select all that apply) select all that apply a my_list4 b my_list5 c my_list-1 d my_list-4 e my_list-5

Explanation:

Step1: Analyze list indexing

In Python, list indexing starts from 0. For my_list = [1,2,3,4,5], the indices are 0 (for 1), 1 (for 2), 2 (for 3), 3 (for 4), 4 (for 5). Negative indexing starts from -1 (last element), -2 (second - last), etc.

Step2: Check each option

• Option A: my_list[4]

Since the index of the last element (5) is 4 (as per 0 - based indexing), my_list[4] gives 5.

• Option B: my_list[5]

The list has 5 elements with indices 0 - 4. my_list[5] will raise an IndexError as it is out of bounds.

• Option C: my_list[-1]

In negative indexing, -1 refers to the last element. So my_list[-1] gives 5.

• Option D: my_list[-4]

my_list[-4] gives 2 (since -4 index is equivalent to 1 in positive indexing (because \(5+(- 4)=1\))).

• Option E: my_list[-5]

my_list[-5] gives 1 (since \(-5+5 = 0\) in positive indexing).

Answer:

A. my_list[4], C. my_list[-1]