Paper 1 · Logical Reasoning
A Venn diagram is a kind of diagram used to
ARepresent and assess the truth of elementary inferences using Boolean algebra of classes
BRepresent and assess the validity of elementary inferences using Boolean algebra of classes ✓ Correct
CRepresent but not assess the validity of elementary inferences using Boolean algebra of classes
DAssess but not represent the validity of elementary inferences using Boolean algebra of classes
Correct answer: (B) Represent and assess the validity of elementary inferences using Boolean algebra of classes — A Venn diagram represents and assesses the validity of inferences, so that is the answer.
Explanation
★A Venn diagram represents and assesses the validity of inferences, so that is the answer.
★It uses overlapping circles as a Boolean algebra of classes.
★By shading and marking, it displays what the premises say.
★It then lets us read off whether the conclusion is forced, that is valid.
★It concerns validity, not the actual truth of the premises.
★So the answer is to represent and assess the validity of elementary inferences.
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