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CBSE Class 11 Computer Science Question 25 of 68

Data Representation and Boolean Logic — Question 9

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9
Question

Question 9

Which of the following is not a binary number?

  1. 1111
  2. 101
  3. 11E
  4. 000
Answer

11E

Reason — A binary number system only includes the digits 0 and 1. The number "11E" contains the letter 'E', which is not a valid digit in the binary system. Therefore, "11E" is not a binary number.