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Questions › JNU › JNU SSS 2015 › Q63
2 marks, −0.5Mathematics › Logic and proof techniques › Propositional logic and conditionalsEasyabout 1 min

JNU SSS 2015 Question 63: Logic and proof techniques

Let XXX, YYY, ZZZ be statements. Suppose we know that ‘XXX implies YYY’, and that ‘YYY implies ZZZ’. If we also know that XXX is false, we can infer that

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Let X, Y, Z be statements. Suppose we know that ‘ X implies Y ’, and that ‘ Y implies Z ’. If we also know that X is false, we can infer that (A) both Y and Z are true (B) Y is true and Z is false (C) Y is false and Z is true (D) None of the above

Logic and proof techniques has come up 73 times in 3 exams since 2004.

What this question tests

This question is on Propositional logic and conditionals, part of Logic and proof techniques in Mathematics.

Statements, truth values and how if-then statements are negated, reversed and chained.

TestStop has 15 past-paper questions on this subtopic.

Practise Logic and proof techniquesMore on Propositional logic and conditionals

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Question from the JNU SSS 2015 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.