A week of trainee
"There are three trainees, they are hospitalized in the same hospital.
(1) There is only one day, only one day, three trainee doctors on duty.
(2) No Chinese doctors have duty for three consecutive days.
(3) There is no more than once in the same day of the two trainees.
(4) First trainee take a break in Sunday, Tuesday and Thursday.
(5) Second trainee take a break on Thursday and Saturday.
(6) The third trainee takes a break on Sunday.
Tri-trainee Doctor's day a day of duty?
(Tip: Judging the Sunday, Tuesday, and Thursday, who is the battle; then it is judged who has taken leave in the three days of the topic.)
Answer
According to (4) and (5), the first and second trainee doctors vacation in Thursday; according to (4) and (6), the first and third trainee doctors on Sunday vacation. Therefore, according to {(3), the situation in the same day in the week is no more than once. }, The second trainee duty at the Sunday, the third trainee doctor at Thursday.
According to (4), the first trainee takes a break on Tuesday. According to (3), the second and third trainee is duty at Tuesday.
The above information may list ("x" representing a class, "-" means a vacation):
Sunday, one or two three four five six
First trainee doctor
Second Chinese doctor XX,
Third trainee - xx
According to (2), the second trainee takes a break on Monday, the third trainee takes a break on Wednesday. According to (5), the second trainee takes a break on Saturday. Therefore, only one day, three trainee doctors, according to {(1) (1). }, Three trainees at the same time on Friday.
The arrangement of the remaining three days in a week can be done in accordance with the reasoning below. According to (2), the third trainee doctor took a break on Saturday. According to (3), the first trainee in Monday, Wednesday, and Saturday; the second trainee at Wednesday; the third trainee is worth a class.
