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Questions › JNU › JNU SSS 2015 › Q58
2 marks, −0.5Mathematics › Logic and proof techniques › Propositional logic and conditionalsEasyabout 1 min

JNU SSS 2015 Question 58: Logic and proof techniques

Let XXX, YYY, ZZZ be statements. Suppose we know that ‘if XXX then YYY’ is true, and that ‘if YYY then ZZZ’ is true. We also know that YYY is false. We can infer that

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Let X, Y, Z be statements. Suppose we know that ‘if X then Y ’ is true, and that ‘if Y then Z ’ is true. We also know that Y is false. We can infer that (A) X is true (B) X is false (C) Z is true (D) Z is false

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.