Correct Answer: Correct answer is: (A) AA.
Exam Relevance: SAT, ACT, AP Computer Science
Difficulty: Easy
Concept notes: The conversion from binary to hexadecimal involves grouping binary digits into sets of four, starting from the right, and then converting each group to its hexadecimal equivalent.
Common Mistakes: Students often make mistakes by not grouping the binary digits correctly or by misinterpreting the hexadecimal values.
Explanations: To convert the binary number 10101010 to hexadecimal, we group the binary digits into sets of four: 1010 1010. Each group of four binary digits corresponds to a single hexadecimal digit. The binary group 1010 converts to the hexadecimal digit A. Therefore, 10101010 in binary is AA in hexadecimal.
Option Analysis: - Option A: Correct. The binary number 10101010 converts to AA in hexadecimal.
- Option B: Incorrect. BB does not correspond to the binary number 10101010.
- Option C: Incorrect. CC does not correspond to the binary number 10101010.
- Option D: Incorrect. DD does not correspond to the binary number 10101010.
Mnemonic: Binary to Hex, Group Four, A is 1010.
The MCQ is quite entertaining and will help in increasing knowledge also.
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