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[solution] » Problem 4.3 Rewrite the following propositions informally in at

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Problem 4.3 Rewrite the following propositions informally in at
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Problem 4.3


Rewrite the following propositions informally in at least two different wayswithout using the symbols ? and ? :

a. ? squares x, x is a rectangle.

b. ? a set A such that A has 16 subsets.


Problem 4.4

Rewrite each of the following statements in the form ?? x such that ?:

a. Some exercises have answers.

b. Some real numbers are rational.


Problem 4.5

Rewrite each of the following statements in the form ?? , if then .?:

a. All COBOL programs have at least 20 lines.

b. Any valid argument with true premises has a true conclusion.

c. The sum of any two even integers is even.

d. The product of any two odd integers is odd.

 







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