Base conversion — Convert the hexadecimal number AA (base 16) to its decimal (base 10) value.

Introduction / Context:
Hexadecimal AA is a common test case because both digits are A, which equals 10 in decimal. Converting it correctly demonstrates comfort with base-16 positional arithmetic.

Given Data / Assumptions:

• A_hex = 10_decimal.
• AA_hex = A16^1 + A16^0.
• 16^1 = 16, 16^0 = 1.

Concept / Approach:
Multiply each hex digit value by its positional weight and add. Since both digits are 10, the computation is straightforward: 1016 + 10.

Step-by-Step Solution:

Verification / Alternative check:

Why Other Options Are Wrong:

Common Pitfalls:

Final Answer: