Analytical Reasoning Question No. 43
An observatory is setting up a schedule for school children to view an astronomy practical. Five school groups—R, S, T, U, and V—will each view the practical exactly once during the four nights, Monday through Thursday, of its maximum brightness. Excellent viewing conditions are predicted for all four nights. The scheduling is subject to the following constraints:
1. At most two groups can view the practical on any given night.
2. Group R cannot view the practical on the same night that Group T.
3. Group S must view the practical on a night prior to the night when Group V views the practical.
4. Group U must view the practical on the same night that Group V does.
1. Which of the following is a possible schedule for viewing the practical?
| Option | Monday | Tuesday | Wednesday | Thursday |
|---|---|---|---|---|
| (A) | T | R, S | U, V | --- |
| (B) | S, T | --- | R, U, V | --- |
| (C) | S | R, T | --- | U, V |
| (D) | R | U, V | S | T |
| (E) | R | S, T | U | V |
2. If Group S views the practical on Wednesday, which of the following must be true?
(A) Group R views the practical on Monday.
(B) Group R views the practical on Wednesday.
(C) Group T views the practical on Tuesday.
(D) Group U views the practical on Thursday.
(E) Group V views the practical on Monday.
3. If Group U can view the practical neither on Wednesday nor on Thursday, which of the following must be true?
(A) Group R views the practical on Monday.
(B) Group S views the practical on Monday.
(C) Group S views the practical on Tuesday.
(D) Group T views the practical on Wednesday.
(E) Group T views the practical on Thursday.
4. If Group T views the practical on Thursday, which of the following could be true?
(A) Group V views the practical on Tuesday.
(B) Group U views the practical on Thursday.
(C) Group S views the practical on Thursday.
(D) Group S views the practical on Wednesday.
(E) Group R views the practical on Thursday.
5. Each of the following could be true EXCEPT:
(A) Group S views the practical on Monday.
(B) Group T views the practical on Wednesday.
(C) Group U views the practical on Tuesday.
(D) Group S and Group T view the practical on Tuesday.
(E) Group T and Group V view practical on Thursday.
6. If groups R, S, and T have each been scheduled for a different night, which of the following must be true?
(A) One of the three views the practical on Monday.
(B) One of the three views the practical on Thursday.
(C) Group R views the practical on a night prior to the night when Group T views it.
(D) Group S views the practical on a night prior to the night when Group R views it.
(E) Group T views the practical on a night prior to the night when Group U views it.
