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Questions › JNU › JNU SSS 2011 › Q100
1 mark, −0.25Mathematics › Logic and proof techniques › Logical reasoning puzzlesModerateabout 1 min

JNU SSS 2011 Question 100: Logic and proof techniques

Five teachers RRR, SSS, TTT, UUU, VVV teach five different subjects- Mathematics, History, Sociology, Economics, Literature. Each teacher teaches once a week on a fixed weekday (Monday through Friday); and each one teaches on a different day from others. VVV does not teach Economics; and does not teach on Tuesdays. SSS teaches History; and does not teach on a Monday or a Friday. The Mathematics teacher teaches on Thursdays. TTT does not teach Economics; and teaches on Wednesdays. The Literature teacher, who is not UUU, teaches on Fridays. RRR teaches on Mondays.

On which day is Economics taught?

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Five teachers R, S, T, U, V teach five different subjects- Mathematics, History, Sociology, Economics, Literature. Each teacher teaches once a week on a fixed weekday (Monday through Friday); and each one teaches on a different day from others. V does not teach Economics; and does not teach on Tuesdays. S teaches History; and does not teach on a Monday or a Friday. The Mathematics teacher teaches on Thursdays. T does not teach Economics; and teaches on Wednesdays. The Literature teacher, who is not U, teaches on Fridays. R teaches on Mondays. On which day is Economics taught? (A) Monday (B) Tuesday (C) Wednesday (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 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.

Practise Logic and proof techniquesMore on Logical reasoning puzzles

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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.