Examples 1.4

Examples 1.4 - Exercises 1.4 Some definitions you need to...

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Exercises 1.4 Some definitions you need to know: Valid deductive argument : a deductive argument where it is impossible for the conclusion to be false given the truth of the premises. Invalid deductive argument : a deductive argument in which it is possible for the conclusion to be false given the premises are true. Sound argument: a valid deductive argument that has all true premises. Valid Invalid True premises All wines are beverages. All wines are beverages Chardonnay is a wine. Chardonnay is a beverage True conclusion So, Chardonnay is a beverage. So, Chardonnay is a wine. True premises All wines are beverages. none exist Ginger ale is a beverage. False conclusion So, ginger ale is a wine. False premises All wines are soft drinks. All wines are whiskeys. Ginger ale is a wine. Chardonnay is a whiskey. True conclusion So, ginger ale is a soft drink. So chardonnay is a wine. False premises All wines are whiskeys. All wines are whiskeys. Ginger ale is a wine. Ginger ale is a whiskey. False conclusion So, ginger ale is a whiskey. So, ginger ale is a wine. All wines are beverages. Chardonnay is a wine. So, Chardonnay is a beverage. Manchester United is a soccer team in the EPL. All teams in the EPL are based in England. So, Manchester United is a soccer team based in England.
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Examples 1.4 - Exercises 1.4 Some definitions you need to...

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