Multiple choice

The decimal number 16 is converted to the binary number, how many binary digits it has?

  1. 4

  2. 3

  3. 5

  4. 7
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C Correct answer
Explanation

The decimal number 16 in binary is 10000, which is 5 binary digits. This is calculated by repeatedly dividing by 2: 16 = 8 remainder 0, 8 = 4 remainder 0, 4 = 2 remainder 0, 2 = 1 remainder 0, 1 = 0 remainder 1, reading remainders backwards gives 10000.

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