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Which is the correct way to write a binary number?

easy📝 Factual Q3 of 15
Intro to Computing - How Data is Represented
Which is the correct way to write a binary number?
AA101
B1010
C10.10
D2A10
Step-by-Step Solution
Solution:

  1. Step 1: Identify valid binary digits

    Binary numbers use only digits 0 and 1.

  2. Step 2: Check each option

    1010 uses only 0 and 1; others include letters or decimal points which are invalid.

  3. Final Answer:

    1010 -> Option B

  4. Quick Check:

    Binary digits are 0 and 1 only [OK]
Quick Trick: Binary digits are only 0 and 1 [OK]
Common Mistakes:
  • Including letters in binary numbers
  • Using decimal points in binary
  • Confusing hexadecimal with binary

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