(A) T and Z
(B) V and W
(C) W and Y
(D) W and X
(E) X and Y
10. Which of the following is a complete and accurate list of the types of bacteria that the biologist could identify by placing samples of the bacteria into the mediums and observing their growth?
(A) T, U, W
(B) T, W, Z
(C) W, X, Y
(D) W, Y, Z
(E) X, Y, Z
11. All seven types of bacteria could be accurately identified if the biologist obtained additional information that allowed her to identify
(A) U and W
(B) U and Z
(C) X and T
(D) X and W
(E) Y and Z
Questions 12-17
Five competiors-J. K. L. M and N-have completed the first event of a three-event competition, with K taking first place, L second place, M third place, J fourth place, and N last place.
The scoring for the three-event competitions is as follows:
The winner of the first event receives 5 points; the second-place finisher, 4 points; the third-place finisher, 3 points; the fourth-place finisher, 2 points; and the last- place finisher, 1 point.
The point values for the second and third event are calculated in the same manner, but the score for the second event is counted twice in the total point standings for the entire competition.
No ties are possible in the individual events. although there can be ties in the total point standing.
The competitor with the most points after the completion of all three events wins the completion
12. If K finishes third in the second event, the highest possible winning score for the entire competition is
(A) 20
(B) 19
(C) 18
(D) 17
(E) 16
13. If M and N have the same number of points after the completion of the second event, which of the following CANNOT be true of the outcome of the second event?
(A) J finished higher than M.
(B) K finished higher than M.
(C) M finished second and N finished first.
(D) M finished third and N finished second.
(E) M finished fourth and N finished second.
14. If K and M are in a two-way tie for first in total point standings following the completion of the second event, they must each have how many points?
(A) 11
(B) 12
(C) 13
(D) 14
(E) 15
15. If, in the second event, the competitors finish in the same order that they did in the first event, which of the following could be a possible outcome of the entire competition?
(A) J finishes second in total point standings.
(B) K finishes third in total point standings.
(C) L finishes third in total point standings.
(D) M finishes first in total point standings.
(E) N finishes third in total point standings.
16. If L finishes higher than third in the second event, L's position in the total point standings for the entire competition will be
(A) alone in first place
(B) in a tie for first place
(C) in a tie for second place
(D) no higher than second place
(E) no lower than third place
17. If L finishes first in the second event, the highest that N can finish in the total point standings for the entire competition is
(A) first
(B) second
(C) third
(D) fourth
(E) last
Questions 18-22
A principal is planning the assignment of five teachers. V, W, X, Y, and Z, and five aides, J, K, L, M, and N, to five adjoining rooms numbered consecutively, one through five, according to the following conditions:
Exactly one teacher and one aide must be assigned to each room.
J and Z must be assigned to room four.
M must be assigned to the same room as Y.
W and X must each be assigned to one of the end rooms.
X cannot be assigned to a room that either K or L is assigned to.
18. Each of the following is a possible assignment of teachers to rooms one and two, respectively, EXCEPT
(A) W, V
(B) W, Y
(C) X, V
(D) X, Y
(E) Y, V
19. Which of the following could be assigned to room three?
(A) J
(B) L
(C) W
(D) X
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