McqMate
| Q. |
Which of the following set (s) are empty ? |
| A. | {x : x = x} |
| B. | {x : x ≠ x} |
| C. | {x : x = x2} |
| D. | {x : x ≠ x2} |
| Answer» B. {x : x ≠ x} | |
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