A Level Computer Science OCR Practice Exam

What is the value of X OR X?

1. True

2. False

3. 0

4. 1

The correct answer is: True

The expression "X OR X" evaluates to X itself in boolean logic. The OR operator returns true if at least one of the operands is true. Therefore, when the same value X is ORed with itself, the result will simply be X. If X is considered true (or a value equal to 1 in binary terms), then true OR true results in true. Similarly, if X is considered false (or equal to 0), then false OR false results in false. Thus, the outcome depends on the truth value of X. Generally, in a logic operation, if X is any truthy value (e.g., true or non-zero), the result will always be true. Given the context of the question, "True" signifies that the value will include X being true. Therefore, the correct choice reflects the logical outcome of the operation resulting in a truthy evaluation. In logical terms, the OR operation with the same variable will lead to a true outcome if that variable is true, which is why "True" is the most fitting answer.