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题目： Alvin (President), Brad (Vice President), Chad (Vice President), Dan (senior analyst), Ellinor (analyst), and Farsad (analyst) work at Goldly & Morgman, a corporate firm that works with consultants. The president supervises the vice president, who in turn supervises the senior analyst, who in turn supervises the analysts. There is one exception, which is that Brad does not supervise anyone. These are the only supervisory relationships involving these 6 employees. Each proposal it receives from its consultants must be initially reviewed by exactly one employee. Each proposal reviewed by an employee must then be reviewed by that person's supervisor. No other rules require anyone else to review the proposal. Anyone not required to review a given proposal will not review it. Select Dan among reviewers for the maximum number of employees that could have reviewed a single proposal if Dan were among the reviewers. Select Alvin among reviewers for the maximum number of employees that could have reviewed a single proposal if Alvin were among the reviewers. Make only two selections, one in each column.

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题目： A string of 10 lightbulbs is wired in such a way that if any individual lightbulb fails, the entire string fails. If for each individual lightbulb the probability of failing during time period T is 0.06, what is the probability that the string of lightbulbs will fail during time period T?

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题目： If f is the function defined by f(x) = 2x for $$x \geq 0 $$ and $${f}({x})={x}^{2}$$ for $$x < 0$$, what is the value of f(c) ?(1) $$\mid c\mid= 2$$(2) $$c < 0$$

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题目： A certain salesperson's weekly salary is equal to a fixed base salary plus a commission that is directly proportional to the number of items sold during the week. If 50 items are sold this week, what will be the salesperson's salary for this week?(1)Last week 45 items were sold.(2)Last week's salary was $405.

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题目： What is the value of $$\mid x + 7\mid$$?(1)$$\mid x + 3\mid= 14$$(2)$$({x}+{2})^{2}={169}$$

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题目： If $${n}={8}^{11}-{8}$$, what is the units digit of n?

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题目： The Earth travels around the Sun at a speed of approximately 18.5 miles per second. This approximate speed is how many miles per hour?

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题目： ($$\sqrt{2}+{1})(\sqrt{2}-{1})(\sqrt{3}+{1})(\sqrt{3}-{1})=$$

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题目： If $$\frac x {600}=\frac y {300}$$, is y equal to 1,000?(1)$$x + y = 3,000$$(2)$$3x = 6,000$$

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题目： The average (arithmetic mean) of 6, 8, and 10 equals the average of 7, 9, and

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题目： A certain database charges users a registration fee of x dollars, and if charges registered users y dollars per file downloaded. If there are no other charges for users of this database, what is the amount of the registration fee?(1) The total charge to download 50 files is $150, including the registration fee.(2) The total charge to download 100 files is $225, including the registration fee.

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题目： The sum of three consecutive integers is 312. What is the sum of the next three consecutive integers?

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题目： Five students took an exam. The average grade on the exam was 80. What was the median grade?1. The average of the two highest grades was 95.2. The average of the two lowest grades was 65.

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题目： if $$\frac{1}{2}+\frac{1}{3}+\frac{1}{4}=\frac{13}{x}$$,which of the following must be an integer?I. $$\frac{x}{8}$$II. $$\frac{x}{12}$$III. $$\frac{x}{24}$$

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题目： In a certain company, the ratio of the number of managers to the number of production-line workers is 5 to 72. If 8 additional production-line workers were to be hired, the ratio of the number of ,managers to the number of production-line workers would be 5 to 74. How many managers does the company have?