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WorksheetsDeductive Reasoning Quiz
Total questions: 15
Worksheet time: 7mins
In deductive reasoning, the conclusion is probabilistic and may not be true even if the premises are true.
TRUE
FALSE
Premises are the pieces of evidence or information that are put forward to support or justify a specific conclusion or claim.
TRUE
FALSE
Major premise is the specific statement or evidence that relates directly to the particular case or situation being discussed.
TRUE
FALSE
(1) All doctors are skilled professionals.
(2) Sarah is a skilled professional.
(3) Therefore, Sarah is a doctor.
Which one is the minor premise?
1
2
3
In a valid syllogism, if both the major and minor premises are true, what can be said about the conclusion?
If the major premise is true but minor premise is false, the conclusion must also be true.
If one of the major or minor premises of a syllogism are true, the conclusion must also be true.
If both the major and minor premises of a syllogism are true, the conclusion must also be true.
If the major premise is false but minor premise is true, the conclusion must also be true.
VALID OR NOT:
Major Premise: All cats have tails.
Minor Premise: Max has a tail.
Conclusion: Therefore, Max is a cat.
VALID
INVALID
VALID OR NOT:
Major Premise: No birds are mammals.
Minor Premise: Dogs are mammals.
Conclusion: Therefore, dogs are not birds.
VALID
INVALID
VALID OR NOT:
Major Premise: All students study mathematics.
Minor Premise: Lisa studies mathematics.
Conclusion: Therefore, Lisa is a student.
VALID
INVALID
What is the conclusion?
Major Premise: No mammals have feathers.
Minor Premise: Penguins have feathers.
Therefore, penguins are not mammals.
Therefore, some mammals are penguin.
No conclusion can be made.
Therefore, some penguins are mammals.
Modus Tollens is a Latin term that means "the way that affirms by affirming."
TRUE
FALSE
If it is raining (P), then the ground is wet.
It is raining.
Therefore, the ground is wet.
It is a...? (more than 1 answer)
Syllogism
Modus Ponens
Modus Tollens
Deductive reasoning
If a nation supports terrorism, it will be isolated by the international community.
Nation B supports terrorism.
Therefore, Nation B will be isolated by the international community.
It is a...?
Valid modus tollens
Invalid modus tollens
Valid modus ponens
Invalid modus ponens
If a government apologizes for past actions, it will improve its international image.
Government D apologizes for past actions.
Therefore, its international image is improved.
It is a...?
Valid modus ponens
Invalid modus ponens
Valid modus tollens
Invalid modus tollens
If a government promotes democracy, it won't experience political instability.
Government C experiences political instability.
Therefore, it doesn't promote democracy.
It is a...?
Valid modus tollens
Invalid modus tollens
Valid modus ponens
Invalid modus ponens
If a nation has strong diplomatic ties, it won't engage in conflict.
Nation A is in conflict.
Therefore, it doesn't have strong diplomatic ties.
It is a...?
Valid modus ponens
Invalid modus ponens
Valid modus tollens
Invalid modus tollens
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