GRE Exam Dumps : GRE General Test

A list of the names of the people of the entire 1990 foreign-born population in neighborhood V was generated, with each person's name appearing once. The names of 2 different people will be randomly selected from the list. Which of the following is closest to the probability that both names selected will be names of people whose region of origin was "Other"?

Exhibit.

A group of 3 different investors is to be randomly selected from the 5 investors shown. What is the probability that, for at least 2 of the 3 investors selected, the number of shares of Stock X purchased and then sold will be less than 1.5 times the corresponding number for stock Y?

A)

B)

C)

D)

E)

In 1995 the United States National Park Service reintroduced wolves into Yellowstone National Park, from which they had been eliminated decades before by overhunting. Biologists hoped the reintroduction would return the park's mix of animals to a more natural state. After the wolves disappearance, the population of their onetime prey, the elk. had burgeoned. Subsequently, new tree growth declined as multiplying elk browsed young trees, denuding certain areas of the park. Following the wolves" return, the elk population declined and young trees rebounded. Most scientists attribute the vegetation changes to the wolves1 return. However. Ration observes that Yellowstone has not had a harsh winter since wolf numbers reached high levels and suggests that elk may not have needed to resort to trees for food.

It can be inferred from the passage that the scientists would he most likely to cite which of the following in support of their view?