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题目： The recent surge in the number of airplane flights has clogged the nation's air-traffic control system, to lead to 55 percent more delays at airports, and prompts fears among some officials that safety is being compromised.

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题目： If a committee of 3 people is to be selected from among 5 married couples so that the committee does not include two people who are married to each other, how many such committees are possible?

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题目： In the view of James Madison and the other Founding Fathers, the Ninth Amendment limits the power of the central Federal government by

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题目： The primary purpose of the passage is to

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题目： The author cites the scholars referring to "voting rights of women or minorities" in order to

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题目： The primary purpose of this passage is to

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题目： The primary purpose of this passage is

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题目： If x and y are prime numbers, which of the following CANNOT be the sum of x and y

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题目： If BC = BD, what is the length of BC?(1) x = 30(2) AD = 1

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题目： If x and y are integers and$$ xy\neq 0$$, what is the value of $$\frac{x}{y}$$ ?(1)$$ x^2 + y^2 = 2xy$$(2)$$ 2x^2 + x - 2xy - y = 0$$

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题目： Suppose A and B are two events, not independent. Is the probability P(A and B) > $$\frac{1}{3}$$?Statement #1: P(A) = 0.8 and P(B) = 0.7Statement #2: P(A or B) = 0.9

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题目： A drawer contains 8 socks, and 2 socks are selected at random without replacement. What is the probability that both socks are black?(1) The probability is less than 0.2 that the first sock is black.(2) The probability is more than 0.8 that the first sock is white.

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题目： Set S consists of all the positive multiples of 5 that are less than K, and K is a positive integer not divisible by 5. The mean of Set S is not divisible by 5. Let N be the number of members of the set. N is not divisible by 5. What does N equal?Statement #1: N < 52Statement #2: $$\frac{K}{5}$$ > 48

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题目： In the circle above, chord AC = 85. What is the area of the circle?Statement #1: ∠ABC = 90°Statement #2: AB = 51 and BC = 68

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题目： A box contains red and blue balls only. If there are 8 balls in total, how many red balls are in the box?(1) If two balls are randomly selected without replacement, the probability that both balls are red is $$\frac{5}{14}$$(2) If two balls are randomly selected without replacement, the probability is $$\frac{15}{56}$$ that the first ball is red and the second ball is blue.