Explanation:
🟢 Step 1: Create a List
x = [2, 4, 6, 8]
- A list named x is created with four elements.
- The elements have indexes 0, 1, 2, and 3.
Index Value
0 2
1 4
2 6
3 8
🟢 Step 2: Understand pop(1)
x.pop(1)
- The pop() method removes and returns the element at the specified index.
- Index 1 contains the value 4.
- Python returns 4 and removes it from the list.
Updated list:
[2, 6, 8]
🟢 Step 3: Understand pop(0)
x.pop(0)
- The updated list is [2, 6, 8].
- Index 0 contains 2.
- Python returns 2 and removes it.
Updated list:
[6, 8]
🟢 Step 4: Understand x[-1]
x[-1]
- Negative indexing accesses elements from the end of a list.
- x[-1] returns the last element.
- The current list is [6, 8], so x[-1] returns 8.
🟢 Step 5: Evaluate the Expression
x.pop(1) + x.pop(0) * x[-1
Python evaluates multiplication before addition, so the expression becomes:
\[
4 + 2 \times 8
\]
First, multiplication:
\[
2 \times 8 = 16
\]
Then, addition:
\[
4 + 16 = 20
\]
The final list after both pop() operations is [6, 8].
✅ Final Output
20
.png)
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