The contrapositive of a statement is formed by negating both the subject and the predicate of the original statement, and then reversing the order. So, the contrapositive of "All whales are mammals" is "All non-mammals are non-whales".
English
10 Questions
20 Marks
12 Mins English English50 Questions100 Marks60 Mins English English10 Questions20 Marks12 Mins EnglishWhich of the following statements are logically equivalent?
A. No soaps are writing—tools.
B. All soaps are non-writing—tools.
C. No non—writing—tools are soaps.
D. No writing-tools are soaps.
Choose the correct answer from the options given below:
Which of the following propositions are so related that they cannot both be false, though they can both be true?
A. Some poems are artworks.
B. All poems are artworks.
C. Some poems are not artworks.
D. Some artworks are poems.
Choose the correct answer from the options given below:
Which among the following are correct in the context of the distribution of terms in categorical propositions?
A. 'A' Proposition distributes its predicate term
B. 'E' proposition distributes its subject and predicate terms
C. 'I' proposition distributes only the subject term
D. 'O' proposition distributes only the predicate term
E. 'A' proposition distributes both its subject and predicate terms
Choose the correct answer(s) from the options given below.
What can be correctly inferred from the MOOD-AEE in the IV figure?
What among the following can be inferred correctly from EIO (Mood) in the IVth figure?
(A) Undistributed middle term
(B) Middle term appears as subject in both the premises
(C) Predicate of the conclusion is distributed
(D) Middle term appears as a predicate in the major premise
(E) Conclusion distributes none of its terms
Choose the correct answer from the options given below:
Identify the correct claims in the context of MOOD- AAI in the 2nd figure.
A. The middle term appears as predicate in both the premises
B. It commits fallacy of undistributed middle term
C. Middle term is distributed in the major premise
D. Draws negative conclusion from affirmative premise
E. Conclusion distributes neither of its terms
Choose the correct answer from the options given below:
Choose the correct answer in the context of EAO in the third figure.
Identify the figure and mood of the following:
"All sodium salts are water-soluble substances. All soaps are sodium salts. Therefore, all soaps are water-soluble substances."
Codes:
Which among the following statements are negatively relevant in the context of fallacies of relevance?
(A) Dogs are cats, cats are felines, so dogs are felines.
(B) Althea is a two years old. So, Althea probably goes to college.
(C) Chris is a woman. Therefore, Chris enjoys knitting.
(D) Marty is a high-school senior. So, Marty likely has a Ph.D.
(E) All dogs have five legs. Rover is a dog. So, Rover has five legs.
Choose the correct answer from the options given below:
Match List - I with List - II.
List - I (In a square of opposition) | List - II (Result) | ||
A. | If ‘E’ is False | I. | ‘O’ is Undetermined |
B. | If ‘O’ is True | II. | ‘E’ is True |
C. | If ‘I’ is False | III. | ‘E’ is False |
D. | If ‘A’ is True | IV. | ‘E’ is Undetermined |
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