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Find the mistake in this binary number: 1020101

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Intro to Computing - How Data is Represented
Find the mistake in this binary number: 1020101
ABinary numbers can only contain 0 and 1
BBinary numbers must be 8 bits long
CBinary numbers cannot start with 1
DBinary numbers must have an even number of digits
Step-by-Step Solution
Solution:

  1. Step 1: Understand binary digit rules

    Binary digits can only be 0 or 1.

  2. Step 2: Check the given number

    The number contains '2', which is invalid in binary.

  3. Final Answer:

    Binary numbers can only contain 0 and 1 -> Option A

  4. Quick Check:

    Binary digits = 0 or 1 only [OK]
Quick Trick: Binary digits are only 0 or 1 [OK]
Common Mistakes:
MISTAKES
  • Allowing digits other than 0 or 1
  • Thinking length or start digit matters

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