Discussion
Which of the codes given below contains only the correct statements ? Statements :
(i) Venn diagram is a clear method of notation.
(ii) Venn diagram is the most direct method of testing the validity of categorical syllogisms.
(iii) In Venn diagram method the premises and the conclusion of a categorical syllogism is diagrammed.
(iv) In Venn diagram method the three overlapping circles are drawn for testing a categorical syllogism.
Codes :
Answer: B
The correct statements are (i), (ii) and (iv).
A Venn diagram is a clear notation, it is the most direct way to test the validity of a categorical syllogism, and for a syllogism with three terms three overlapping circles are drawn.
Statement (iii) is incorrect. Only the premises are diagrammed. The conclusion is not drawn but is read from the diagram, to see whether the premises already contain it. Codes that include (iii) are therefore wrong.
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