Let's look at these statements one at a time: i. This is a direct statement of De Morgan´s law. This is definitely true. Just to recap, De Morgan´s laws are as follows: 1. 2. ii. , then is equal to the universal set If A and B are disjoint sets, and is the universal set. This statement is correct. iii. If = Universal Set, then should be the null set. This means is the null set. iv. If , then If then . This implies that If , then and Thus . This statement is true. Correct Answer: All four statements are true.
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