What is the minimal number of bits required to uniquely represent the decimal number 255 in an unsigned binary integer format?

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A 7 bits
B 8 bits
C 9 bits
D 16 bits

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Answer: B. 8 bits

• Answer: B) 8 bits
• Explanation: The maximum value an n-bit unsigned integer can hold is \(2^n - 1\). For 8 bits, 2⁸ - 1 = 255. Therefore, exactly 8 bits are needed.

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What is the minimal number of bits required to uniquely represent the decimal number 255 in an unsigned binary integer format?

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