What is the decimal value of hexadecimal 0x00B9?

What is the decimal value of hexadecimal 0x00B9?

• A. 155
• B. 205
• C. 185
• D. 255

Answer: (C)

Hex digits represent powers of 16. For 0x00B9, the rightmost digit is 9 (contributes 9 × 16^0 = 9) and the next digit is B, which is 11 in decimal (contributes 11 × 16^1 = 176). Leading zeros add nothing. Add them: 9 + 176 = 185. Therefore, the decimal value is 185.

Hex digits represent powers of 16. For 0x00B9, the rightmost digit is 9 (contributes 9 × 16^0 = 9) and the next digit is B, which is 11 in decimal (contributes 11 × 16^1 = 176). Leading zeros add nothing. Add them: 9 + 176 = 185. Therefore, the decimal value is 185.