Questions 1-6
Positions 1, 2, 3, and 4 are the only positions that Y and Z, the two hands on a dial, can be in. Y cannot be in the same position as Z at any one time.
The only possible changes in position are:
From 1 to 2 and vice versa
From 2 to 3 and vice versa
From 3 to 4 and vice versa
From 4 to 1 and vice versa
Only one hand can change position at any one time, and each change in position is followed by a period during which both hands are still.
1. Which of the following is a possible sequence of consecutive positions through which one of the hands could have moved?
(A) 1, 2, 1, 3
(B) 1, 2, 3, 1
(C) 2, 1, 2, 1
(D) 3, 2, 4, 3,
(E) 4, 1, 4, 2
2. If Y is in position 1 and Z is in position 3, each of the following is a possible change from its current position for one of the hands EXCEPT from
(A) 1 to 2
(B) 1 to 4
(C) 2 to 3
(D) 3 to 2