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Questions › JNU › JNU SSS 2011 › Q92
1 mark, −0.25Mathematics › Logic and proof techniques › Logical reasoning puzzlesHardabout 1 min

JNU SSS 2011 Question 92: Logic and proof techniques

One of AAA, BBB, CCC and DDD has cheated in the examination with the help of another one of them. Here are the statements that these individuals made to the investigator. AAA : If BBB is guilty of some wrong-doing, then CCC must be innocent. BBB : If AAA is innocent, then CCC must be guilty. CCC : If BBB cheated in the examination, then DDD must have had nothing to do with any wrong-doing. DDD : I am innocent. The statements of the person who has cheated and his accomplice are false and those of the remaining two are true.

The accomplice of the person who cheated in the examination was

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One of A, B, C and D has cheated in the examination with the help of another one of them. Here are the statements that these individuals made to the investigator. A: If B is guilty of some wrong-doing, then C must be innocent. B: If A is innocent, then C must be guilty. C: If B cheated in the examination, then D must have had nothing to do with any wrong-doing. D: I am innocent. The statements of the person who has cheated and his accomplice are false and those of the remaining two are true. The accomplice of the person who cheated in the examination was (A) A (B) B (C) C (D) D

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

What this question tests

This question is on Logical reasoning puzzles, part of Logic and proof techniques in Mathematics.

Deduction problems that ask what must follow from a set of constraints.

TestStop has 47 past-paper questions on this subtopic.

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Question from the JNU SSS 2011 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.