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
(E) 3 to 4
3. If Y is in position 2 and Z is in position 3, and if each hand changes position exactly once, which of the following could be the two position changes performed?
(A) From 2 to 3, from 1 to 4
(B) From 2 to 1, from 3 to 4
(C) From 2 to 1, from 1 to 4
(D) From 3 to 2, from 2 to 3
(E) From 3 to 4, from 4 to 1
4. If two consecutive position changes both involve Y only, the first from 2 to 3, and the second from 3 to 4, which of the following must be true?
(A) If Z moves next, Z goes from 1 to 2.
(B) If Z moves next, Z goes from 2 to 1.
(C) If Z moves next, Z goes from 2to 3.
(D) On the next move, Y goes from 4 to 1.
(E) On the next move, Y goes from 4 to 3.
5. If Y is in position 4 and Z is in position 1, what is the minimum number of position changes required for Y and Z to exchange their current positions?
6. Which of the following must have occurred during a period in which Y's positions were, consecutively, 1, 2, 3, 4, and 1?
(A) Y stood still in position 2 while Z changed position.
(B) Y stood still in position 4 while Z changed position.
(C) Z made as many position changes as did Y.
(D) Z made exactly two position changes interspersed among Y's.
(E) Z made at least two position changes.
7. A group of subjects saw a film of two cars colliding. Immediately afterward, half of the group were asked a set of questions about the cars "bumping" into one another, while the other half were asked the same questions, but with the verb "smash" substituted for "bumping". In later descriptions of the filmed collision, subjects in the latter half were more likely to remember seeing broken glass. "
The experiment described above best supports which of the following conclusions about eyewitness testimony?
(A) A witness who is agitated at the time of an event is likely to give less accurate testimony than is a calm witness.
(B) A witness' perception of an event will be distorted if inflammatory language is used by the questioner.
(C) The manner in which a witness is questioned after an event can influence the recollection of the witness.
(D) Most eyewitness testimony can be assumed to contain inaccurate elements.
(E) Special questioning techniques can be developed that will be more conducive to eliciting accurate information from witnesses that traditional techniques have been.
8. New York State legalized a system of off track betting on horse races in the hope of gathering some revenue for itself while reducing illegal gambling. Since the law was passed, however, the number of illegal off-track bets has increased substantially. The reason is not hard to fathom. When the state itself declared gambling to be legitimate, it swept aside the moral reservations that had made many people reluctant to gamble.
The author does not adequately account for the increase mentioned in the passage, because the author does not explain why
(A) people who overcame their moral reservations about gambling would place illegal rather than legal bets
(B) people with moral reservations about gambling failed to prevent the legalization of a system of betting
(C) New York State continued to permit legal betting when the increase in illegal betting became evident
(D) New York State believed that legalized off track betting would increase state revenues
(E) New York State believed that legalized off track betting would undercut the illegal gambling network
9. Studies of 108 South American mummies show that pneumonia was a major cause of death in that continent 3,000 years ago and that the incidence of pneumonia death was close to the incidence of pneumonia death today.
Which of the following would be most important to know in evaluating the accuracy of the statement above?
(A) The incidence of pneumonia death as evidenced by mummies from other continents
(B) Whether people 3,000 years ago had any conception of the disease pneumonia
(C) Causes of death, other than pneumonia, apparent in the mummies studied
(D) The general incidence of disease in South America 3,000 years ago
(E) If the mummies were representative of the South American population of their time
A patient with disease G will exhibit both a rash and a fever and either a sore throat or a headache, but not both.
A patient with disease L will exhibit both a rash and a fever but neither a sore throat nor a headache.
A patient with disease T will exhibit at least a sore throat and a headache and possibly other symptoms.
A patient with disease Z will exhibit at least a head- ache, and possibly other symptoms, but never a rash.
No one has more than one of the diseases G, L, T, Z at once.
10. If a patient exhibits both a sore throat and a fever, it must be true that the patient
(A) has disease Z
(B) does not have disease G
(C) does not have disease L
(D) has a rash
(E) has a headache
11. If a patient who has one of the diseases mentioned above does not have a rash, the patient must have
(A) a fever
(B) a headache
(C) a sore throat
(D) disease T
(E) disease Z
12. If Miller, a patient, does not have a sore throat, it must be true that she
(A) has disease L
(B) has disease Z
(C) does not have disease G
(D) does not have disease Z
(E) does not have disease T
13. If Rodriguez, a patient who has one of the diseases mentioned above, has neither a fever nor a sore throat, she must have which of the following?
Ⅰ. A headache
Ⅱ. Disease Z
Ⅲ. A rash
(C) Ⅲ only
(D) Ⅰand Ⅱ only
(E) Ⅱ and Ⅲ only
14. If Harris, a patient who has one of the diseases mentioned above, does not have a fever, he must have which of the following?
Ⅰ. A headache
Ⅱ. A rash
Ⅲ. A sore throat
(B) Ⅱ only
(C) Ⅲ only
(D) Ⅰand Ⅱ only
(E) Ⅱand Ⅲ only
15. If the only symptoms of a patient with one of the diseases mentioned above are a fever and a headache, the patient
(A) must have disease G
(B) must have disease L
(C) must have disease T
(D) must have disease Z
(E) could have either disease G or disease T
An organist is arranging to judge the playing of original compositions by six student organists-R, S, T, U, V, and W. She will hear one student play each day from Monday through Saturday. She must schedule the auditions for the students according to the following conditions:
R must play earlier in the week than W.
S must play on Thursday.
T must play on the day immediately before or immediately after the day on which U plays.
V cannot play on Tuesday.
16. Which of the following is a possible schedule of auditions, with the students listed in playing order from Monday through Saturday?
(A) R, V, U, W, T, S
(B) R, V, W, S, T, U
(C) T, U, R, S, V, W
(D) U, T, V, R, W, S
(E) W, R, V, S, T, U
17. If T plays on Tuesday, the earliest day on which W can play is
18. If U plays on Saturday and W plays before V plays, R must play on
19. R's audition could be scheduled for the day immediately before the day of the audition of any of the following students EXCEPT
20. If V plays on the day immediately before the day on which T plays, who must play on Friday?
21. The organist could schedule any of the following to play on a day immediately before or after the day on which T plays EXCEPT
22. If R must play on the day immediately after the day on which V plays, R must play on
23. A study of the use of the polygraph, or lie detector, found that when a trained examiner using approved questioning techniques gave the test, information from the lie detector was accurate for 70 to 90 percent of the responses in determining whether responses were truthful.
It can be reliably concluded from the results of the study cited above that
(A) the lie detector gives accurate results only when employed by a trained examiner using approved questioning techniques
(B) with a trained examiner using approved questioning techniques, the lie detector gave incorrect results in at least one out of ten instances
(C) in at least 70 percent of the cases, a trained examiner using approved questioning techniques can discriminate between the questions for which the lie detector gives correct results and those for which it does not
(D) the lie detector measures truth-telling objectively, and the validity of its use does not depend on subjective interpretation on the part of the examiner
(E) if a trained examiner using approved questioning techniques asks a specific question and the lie detector indicates that the answer was false, the respondent definitely lied when giving that answer
24. Professor Panovich concludes that, since dinosaur teeth exhibit annual growth rings like those found in the teeth of modern crocodiles, dinosaurs, like crocodiles, were cold-blooded. But the teeth of desert bighorn sheep also exhibit growth rings, and everyone knows bighorn sheep are warm-blooded.
Which of the following, if true, strengthens Panovich's argument?
(A) Structures in dinosaurs that are apparently similar to structures in modern species of reptiles do not always serve the same functions that such structures do in modern species.
(B) Dinosaurs were so diverse that some species could have been cold-blooded and others warm-blooded.
(C) Several modern species of animals, some cold-blooded, some warm-blooded, have teeth with annual growth rings.
(D) Annual growth rings in warm-blooded animals are caused by extreme seasonal variations in temperatures, but this could not have been the case for dinosaurs. who lived in constant climates.
(E) The small number of fossilized remains of dinosaurs cannot be assumed to represent the most typical species of dinosaurs.
25. Technological innovation is widely extolled as the way to guarantee future prosperity. The after-effects of industrial innovation, however, may be far from benign. Revolutionary new technologies such as robots may not only eliminate jobs but also diminish the quality of working life in factories where robots work closely with people.
Which of the following, if true, provides the strongest support for the author's position?
(A) To be effective, robots require close supervision by skilled employees.
(B) Revolutionary technologies can reduce unemployment.
(C) Robots can do jobs that people find enjoyable.
(D) Robots relieve people of boring, repetitious work.
(E) The quality of the finished work depends on the quality of the worker.