Paper 1 · Logical Reasoning
Statements: (1) Glass is brittle. (2) This substance is not brittle. Inference: This substance is not glass. The inference is
ADefinitely true ✓ Correct
BDefinitely false
CProbably true or false
DSuch that it cannot be drawn
Correct answer: (A) Definitely true — The inference is definitely true, so that is the answer.
Explanation
★The inference is definitely true, so that is the answer.
★Glass is brittle, so anything not brittle cannot be glass.
★The substance is not brittle, so it is not glass.
★This is a valid modus tollens inference.
★Hence the conclusion is definitely true.
★So the answer is definitely true.
Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.
Shared by Mcqkart · via Mcqkart.in