MCQOPTIONS
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MCQOPTIONS
| 1. |
If R1 and R2 are binary relations from set A to set B, then the equality ______ holds. |
| A. | (R<sup>c</sup>)<sup>c</sup> = R<sup>c</sup> |
| B. | (A x B)<sup>c</sup> = |
| C. | (R<sub>1</sub> U R<sub>2</sub>)<sup>c</sup> = R<sub>1</sub><sup>c</sup> R<sub>2</sub><sup>c</sup> |
| D. | (R<sub>1</sub> U R<sub>2</sub>)<sup>c</sup> = R<sub>1</sub><sup>c</sup> R<sub>2</sub><sup>c</sup> |
| Answer» D. (R<sub>1</sub> U R<sub>2</sub>)<sup>c</sup> = R<sub>1</sub><sup>c</sup> R<sub>2</sub><sup>c</sup> | |