Mrs. Green 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 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. Mrs. Green will allow just one person to work per day.

(1) The painter can do his work only after the plumber and the carpenter have completed their jobs.

(2) The interior decorator has to complete his job before that of the electrician.

(3) The carpenter cannot work on Monday or Tuesday.

18. In case the painter works on Thursday, which among the following alternatives is possible?

    (A) The electrician works on Tuesday.
    (B) The electrician works on Friday.
    (C) The interior decorator does his work after the painter.
    (D) The plumber and the painter work on consecutive days.
    (E) Mrs. Green cannot fit all of the workers into schedule.

19. 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.
    (E) The electrician may work on Tuesday.

20. Which arrangement among the following is possible?

    (A) The electrician will work on Tuesday and the interior decorator on Friday.
    (B) The painter will work on Wednesday and the plumber on Thursday.
    (C) The carpenter will work on Tuesday and the painter on Friday.
    (D) The painter will work on Monday and the carpenter on Thursday.
    (E) The carpenter will work on Wednesday and the plumber on Thursday.

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Test 2