Multiple choice

What is 25 (decimal) in binary?

  1. 00011001

  2. 00001011

  3. 00111001

  4. 00010001
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A Correct answer
Explanation

To convert 25 decimal to binary: 25 / 2 = 12 (rem 1), 12 / 2 = 6 (rem 0), 6 / 2 = 3 (rem 0), 3 / 2 = 1 (rem 1), 1 / 2 = 0 (rem 1). Reading remainders upwards gives 11001, which is 00011001 in 8-bit.

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