If is an integer, and , is even?

(1) and are both integers

(2) is odd

Gracie argued that community-owned sources of fresh water, such as river and lakes, will always be maintained less carefully than privately-owned sources such as wells. She claimed that most people would be tempted to overuse community property because the benefits would accrue to the individual, while the costs of reduced quality that result from overuse would be spread among all members of the community. But a study comparing 250 community-owned lakes with 4,000 private wells showed that the lakes were in significantly better condition.

The answer to which of the following questions would be most useful in evaluating the significance, of the study described above, as it relates to Gracie’s thesis?

A false positive result on a contamination test occurs when the test indicates that a contaminant is present in an uncontaminated substance; conversely, a false negative result indicates an absence of contaminant that is, in fact, present. To accurately detect mercury contamination in water supplies, researchers should use the laboratory test that has the lowest proportion of false positive results.

Which of the following, if true, gives the most support to the recommendation above?

Under the Department of Transportation's old rules, salt could be transported loosely, and so it was not necessary to have advanced packaging facilities.

John can buy apples and mango for , or apple and mangoes for . How much does mango cost?

Of 8 people having a meal, 5 are having fries, 4 are having burgers and 3 are having bacon. No other food is at the table. Each person is eating at least 1 item. If exactly 4 people are eating exactly 2 food items, how many people are eating all 3 items?

The King Edward College team won 25% of its first 12 games and went on to win all of its remaining games. What was the ratio of games won to games lost by the team, if there were no ties?

(1) If the team had won 25% of all its games, it would have lost 30 more games than it actually did

(2) The team won 75% of all its games

If of high schoolers on the school football team are freshman, and of high schoolers are freshman that are on the school football team, then what is the percentage of all high schoolers that are on the school football team?

Six friends (Adam, Bruce, Connor, David, Ethan & Frank) have to form a line, but Adam and Bruce want to stand next to each other in the line. In how many different ways can they be lined up in a row?

Smartphones have allowed users to remain connected to the Internet, but they have also been blamed for distracting drivers, causing hundreds of accidents, and creating an increase in highway fatalities.

Smith bought a bicycle for $200. After 1 month, the price of the bicycle fell by $10, and after 2 months, a discount of 10% was offered on the reduced price. What percent of $200 would Smith have saved had he waited for 2 months to buy the bicycle?

What is the value of ?

(1) 

(2) 

John works at a bookstore. If John saved $200 in three months, how much did he save in the second month?

(1) John saved an average of $50 per month in the first and last months.

(2) In the first month, John saved two-thirds of what he saved in the second and third months combined.

If , which of the following is a possible value for ?

Jericho, a 2006 post-apocalyptic drama, is based on the struggle of the citizens of a small town to survive when little water or resources exist.

Last year a health department survey of 100 restaurants in Miami found unsanitary conditions in 90 percent of them and they ranged from unwashed utensils to expired raw ingredients.

As of 2007, only half of the farmers promised relief under the State Disaster Relief Plan had been granted any funds; at least as much as a million others had not received any governmental support whatsoever.

Job placements at several top business schools witnessed a slowdown during the 2008–2009 economic recession. However, enrollment figures at these schools boomed during this period.

Each of the following, if true, helps to explain the enrollment increase at business schools in the situation described above EXCEPT: