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13. GWD题,When positive integer x is divided by 5, the remainder is 3; and when x is divided by 7, the remainder is 4. When positive integer y is divided by 5, the remainder is 3; and when y is divided by 7, the remainder is 4. If x > y, which of the following must be a factor of x - y? E 通项公式:35X+18,35Y+18 A. 12 B. 15 C. 20 D. 28 E. 35 15. 一个数列的标差是否为0? A 1)平均数等于最大数 2)中位数等于平均数 12345,33333 j 就是这2道,请快点告诉我啊,12号LA就考试了,晕  
就是这2道,请快点告诉我啊,12号LA就考试了,晕  
谢谢listen 2000  |