Concept explainers
What rule of inference is used in each of these arguments?
a) Alice is a mathematics major. Therefore, Alice is either a mathematics major or a computer science major.
b) Jerry is a mathematics major and a computer science major. Therefore, Jerry is a mathematics major.
c) If it is rainy, then the pool be closed. It is rainy. Therefore, the pool is closed.
d) If it snows today, the university will close. The university is not closed today. Therefore, it did not snow today.
e) If l go then I stay in the sun too long If I stay in the sun too long, then I sunburn. Therefore, if I go swimming, then I sunburn.
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Discrete Mathematics and Its Applications ( 8th International Edition ) ISBN:9781260091991
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