Antecedents/Consequents
Find the antecedent of: If you fall down the stairs, you will break your leg.
You fall down the stairs.
Write an equivalent immediate inference for the following statement: No large democracy is an effective government.
Obverse: All large democracies are non-effective governments.
Converse: No effective government is a large democracy.
If anyone is sick, then he should pray. Joseph is not sick, so Joseph does not need to pray. What is wrong with this hypothetical syllogism?
It is denying the antecedent.
Develop a syllogism for the following statement: Some earthquakes are not dangerous.
No undetectable events are dangerous events. Some earthquakes are undetectable events. Therefore, some earthquakes are not dangerous.
We cannot trust Katie, because she lied last week. Translate into a standard syllogism.
(All last week-liars are untrustworthy people.) All Katie is a last-week liar. All Katie is an untrustworthy person.
Find the consequent of: If you play in virtual reality, you will have fun.
You will have fun.
Write an equivalent immediate inference for the following statement: Some pagan myths are profitable reading.
Obverse: Some pagan myths are not non-profitable reading.
Converse: Some profitable readings are pagan myths.
If there is no vision, then the people perish. We must have no vision, for we are perishing people. What is wrong with this hypothetical syllogism?
It is affirming the consequent.
Develop a syllogism for the following conclusion: Some athletes earn straight A's.
All Joe is a straight-A earner. All Joe is an athlete. Therefore, some athletes are straight-A earners.
Mary does well because she pays attention. Translate into a standard syllogism.
Find the antecedent of: If I use a parachute when skydiving, I will survive the fall.
I use a parachute when skydiving.
Write an equivalent immediate inference for the following statement: All impossible events are improbable events.
Obverse: No impossible events are probable events.
Contrapositive: All probable events are possible events.
Identify the form: Jesus said, "If you love me you will keep my commandments." John loves Jesus, therefore John keeps His commandments.
Modus Ponens.
All bags are pliant repositories. Develop a syllogism for this conclusion.
All containers are pliant repositories. All bags are containers. Therefore, All bags are pliant repositories.
Blessed are the meek, for they will inherit the earth. Translate into a standard syllogism.
(All earth-inheritors are blessed people.) All the meek are earth-inheritors. Therefore, all the meek are blessed people.
What is the antecedent and consequent of: If you heed instruction then you will prosper.
Antecedent: You heed instruction.
Consequent: You will prosper.
Write an equivalent immediate inference for the following statement: No penguins are non-swimmers.
Obverse: All penguins are swimmers.
Converse: No non-swimmers are penguins.
Identify the form: If you trust in Christ then you are saved. Judas was not saved, so he must not have trusted in Christ.
Modus Tollens.
There is no one righteous, not even one. Develop a syllogism for this conclusion.
No sinner is a righteous person. All people are sinners. Therefore, no person is a righteous person.
Anyone who claims to forgive sins is claiming to be God, and Jesus claimed to forgive sins. Translate into a standard syllogism.
All people claiming to forgive sins are people claiming to be God. All Jesus was a person claiming to forgive sins. (Therefore, All Jesus was a person claiming to be God.)
What is the antecedent and consequent of: If you eat food, you will be full.
Antecedent: You eat food.
Consequent: You will be full.
Write an equivalent immediate inference for the following statement: Some defendants are not nonresponsive witnesses.
Obverse: Some defendants are responsive witnesses.
Contrapositive: Some responsive witnesses are not non-defendants.
Create a hypothetical syllogism from this hypothetical statement: If you heed instruction, then you will prosper. What is the form of this syllogism?
If you heed instruction then you will prosper. You heed instruction. Therefore, you will prosper. From: Modus Ponens.
A joke is a very serious thing. Develop a syllogism for this conclusion.
All different perspectives on things are very serious things. All jokes are different perspectives on things. Therefore, all jokes are very serious things.
Enoch was not found, because God translated him. Translate into a standard syllogism.
(No God-translated person is a found person.) All Enoch was a God-translated person. Therefore, no Enoch was a found person.