Multiple choice

Number 221 in BCD is

  1. 001001000001

  2. 001000100001

  3. 010000100001

  4. 001000100010
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In BCD, each decimal digit becomes 4 binary digits. For 221: 2 becomes 0010, 2 becomes 0010, 1 becomes 0001. Concatenating gives 001000100001.

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