Questions 1-7
Seven pedigreed dogs—Frieda, King, Laddie, Max., Pal, Spot, and Toppy—are entered in a dog show. The dogs must be scheduled into seven consecutive time slots for judging, and only one dog can be scheduled into any time slot. The schedule must be based on the following constraints:
Frieda cannot be in a time slot immediately before or immediately after Max's time slot Laddie cannot be in a time slot immediately before or immediately after Toppy's time slot. Pal's time slot must be sometime before Spot's time slot. King must be in the seventh time slot
1. If Pal and Max are the third and fourth dogs judged,respectively, Frieda must be scheduled for a time slot selected from which of the following pairs of slots?
(A) First and second
(B) First and sixth
(C) Second and fifth
(D) Second and sixth
(E) Fifth and sixth
2. Which of the following is an acceptable sequence of dogs in the first four time slots?
First Second Third Fourth
(A) Frieda Pal Toppy Laddie
(B) Laddie Spot Toppy Pal
(C) Max Frieda Pal Spot
(D) Pal Frieda Laddie King
(E) Toppy Max Pal Laddie
3.Any of the following can be the sixth dog judged EXCEPT
(A) Frieda
(B) Laddie
(C) Max
(D) Pal
(E) Spot
4. If Pal is the first, Laddie the third, and Fried --------fifth dog judged, which of the following must be true?
(A) The remaining dogs can be acceptably scheduled in either of exactly two ways
(B) The remaining dogs can be acceptably scheduled in only one way.
(C) Max is judged immediately before King
(D) Spot is judged immediately before Laddie
(E) Toppy is judged immediately before Frieda.
5.If the first three dogs judged are Max, Pal, and Frieda, respectively, which of the following must be true?
(A) King is the sixth dog judged.
(B) Laddie is the fourth dog judged.
(C) Spot is the fifth dog judged.
(D) Toppy is the fifth dog judged.
(E) Toppy is the sixth dog judged.
6.If Laddie is the fourth dog judged, Toppy can be scheduled into any one of how many different time slots?
(A) Two
(B) Three
(C) Four
(D) Five
(E) Six
7.If the schedule includes Laddie sometime before Pal and Pal sometime before Max, which of the following must be true?
(A) Laddie is in one of the first three time slots.
(B) Max is in one of the last three time slots
(C) Pal is in one of the first three time slots
(D) Spot is in the time slot immediately after Max
(E) Toppy is in the time slot immediately after Max
答案：AEDBC BA
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