SAT数学选择练习题附答案解析Ⅵ

　☆1. Of the following, which is greater than ? ?

　　A. 2/5

　　B. 4/7

　　C. 4/9

　　D. 5/11

　　E. 6/13

　　☆2. If an object travels at five feet per second, how many feet does it travel in one hour?

　　A. 30

　　B. 300

　　C. 720

　　D. 1800

　　E. 18000

　　☆3. What is the average (arithmetic mean) of all the multiples of ten from 10 to 190 inclusive?

　　A. 90

　　B. 95

　　C. 100

　　D. 105

　　E. 110

　　☆4. A cubical block of metal weighs 6 pounds. How much will another cube of the same metal weigh if its sides are twice as long?

　　A. 48

　　B. 32

　　C. 24

　　D. 18

　　E. 12

　　☆5. In a class of 78 students 41 are taking French, 22 are taking German and 9 students are taking both French and German. How many students are not enrolled in either course?

　　A. 6

　　B. 15

　　C. 24

　　D. 33

　　E. 54

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