In this section use scrap paper to solve each problem. Then decide which is the best of the choices given and fill in the corresponding oval on the Answer Sheet.
{{U}}Directions{{/U}}: In the following type of question, two quantities appear, one in Column A and one in Column B. You must compare them. The correct answer to the question is
A if the quantity in Column A is greater
B if the quantity in Column B is greater
C if the two quantities are equal
D if it is impossible to determine which quantity is greater
{{U}}Notes:{{/U}} Sometimes information about one or both of the quantities is centered above the two columns. If the same symbol appears in both columns, it represents the same thing each time.
 
【正确答案】
【答案解析】
【正确答案】
A
【答案解析】Since Y is inside the circle it is closer to the center than X, which is on the circle. Column A is greater.
【正确答案】
B
【答案解析】Since x + y = 1, at least one of the numbers is positive. If either x or y is 0, the product xy = 0; and if either one is negative, then xy is negative. In each case, xy is less than 1. If both x and y are positive, then each is less than 1, and so is their product. Column B is' greater.
【正确答案】
A
【答案解析】There is not enough information provided to determine the values of a, b, c, d, e, f, and g, but they are irrelevant. Since the sum of the measures of the seven angles is 360°, their average is 360° + 7 = 51.4°. Column A is greater.
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