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What is the converse of the statement CD CD Is the converse logically equivalent to the original statement? Why or why not? 2.What is the

  1. What is the converse of the statement CD

CD

Is the converse logically equivalent to the original statement? Why or why not?

2.What is the contrapositive of the statement? PQ

PQ

Is the contrapositive logically equivalent to the original statement? Why or why not?

3.Prove, by exhibiting examples, that the sum of two irrational numbers can be either rational or irrational. Why is it okay to prove "by example" here, whereas it is not okay to prove "by example" in general?

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