Questions 18-23
Nine different treatments are available for a certain illness: three antibioties—F, G, and H—three dietary regimens—M, N and O—and three physical therapies—U, Y, and W, For each case of the illness, a doctor will prescribe exactly five of the treatments, in accordance with the following conditions.
If two of the antibioties are prescribed, the remaining antibiotie cannot be prescribed
There must be exactly one dietary regimen prescribed
If O is not prescribed F cannot be prescribed
If W is prescribed F cannot be prescribed
G cannot be prescribed if both N and U are prescribed
V cannot be prescribed unless both H and M are prescribed
18. Which one of the following could be the five treatments prescribed for a given case?
(A) F, G, H, M, V
(B) F, G, M, O, V
(C) F, H, M, O, W
(D) G, H, N, U, W
(E) G, H, O, U, W
19. Which one fo the following could be the antibioties and physical therapies prescribed for a given case?
(A) F, G, H, W,
(B) F, G, U, V
(C) F, U, V, W
(D) G, U, V, W
(E) H, U, V, W
20. If O is prescribed for a given case, which one of the following is a pair of treatments both of which must also be prescribed for that case?
(A) F, M
(B) G, V
(C) N, U
(D) U, V
(E) U, W
21. If G is prescribed for a given case which one of the following is a pair of treatments both of which could also be prescribed for that case?
(A) F, M
(B) F, N
(C) N, V
(D) O, V
(E) V, W
22. Which one of the following is a list of three treatments that could be prescribed together for a given case?
(A) F, M, U
(B) F, O, W
(C) G, N, V
(D) G, V, W
(E) H, N, V
23. Which one of the following treatments CANNOT be prescribed for any case?
(A) G
(B) M
(C) N
(D) U
(E) W
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