ISRO Computer Science (CSE) 2008 - Question 28

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Which of the following is not a valid rule of XOR?

  • A. 0 XOR 0 = 0
  • B. 1 XOR 1 = 1
  • C. 1 XOR 0 = 1
  • D. B XOR B = 0

Answer: B. 1 XOR 1 = 1

Explanation: 1 XOR 1 = 0. So 1 XOR 1 = 1 is invalid.

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