Direction: The following question consists of six statements followed by options consisting of three statements put together in a specific order. Choose the option which indicates a valid argument…
Question and options
Direction: The following question consists of six statements followed by options consisting of three statements put together in a specific order. Choose the option which indicates a valid argument containing logically related statements that is, where the third statement is a conclusion drawn from the first two statements
I. Lizards are birds
II. Some birds are ants
III. Lizards are ants
IV. Some lizards are ants
V. Some lizards are not ants
VI. No lizard is ant
I. Lizards are birds
II. Some birds are ants
III. Lizards are ants
IV. Some lizards are ants
V. Some lizards are not ants
VI. No lizard is ant
- I, III, V
- I, IV, II
- II, I, III
- II, VI, IV
Answer and explanation
Correct answer: B - I, IV, II
I (all lizards are birds) and IV (some lizards are ants) together give II (some birds are ants): the lizards that are ants are also birds. The other combinations are invalid syllogisms; for example, "some birds are ants" and "lizards are birds" do not show that all lizards are ants.
Practice for these exams
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CUSAT CAT Integrated IPR Ph.D.
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