JNU SSS 2010 Question 47: Logic and proof techniques
Ms. A wishes to renovate her cottage. She hires the services of a plumber, a carpenter, a painter, an electrician and an interior decorator. The renovation is to be completed in a period of one working week, i.e., Monday to Friday. Every worker will be taking one complete day to do his job. Ms. A will allow just one person to work per day.
The painter can do his work only after the plumber and the carpenter have completed their jobs. The interior decorator has to complete his job before that of the electrician. The carpenter cannot work on Monday or Tuesday.
In case the painter works on Friday, which among the following statements must be untrue?
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Ms. A wishes to renovate her cottage. She hires the services of a plumber, a carpenter, a painter, an electrician and an interior decorator. The renovation is to be completed in a period of one working week, i.e., Monday to Friday. Every worker will be taking one complete day to do his job. Ms. A will allow just one person to work per day. The painter can do his work only after the plumber and the carpenter have completed their jobs. The interior decorator has to complete his job before that of the electrician. The carpenter cannot work on Monday or Tuesday. In case the painter works on Friday, which among the following statements must be untrue? (A) The carpenter may work on Wednesday (B) The carpenter and the electrician may work on consecutive days (C) In case the carpenter works on Thursday, the electrician has to work on the previous day, i.e., Wednesday (D) The plumber may work before the electrician does
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.
