单项选择题

M(r，s，t)denotes the average(arithmetic mean)of，r，s，and t，and M(x，y)denotes the average of x and y．（）

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 the relationship cannot be determined from the information given.

<上一题目录下一题>

热门试题

单项选择题

（）

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 the relationship cannot be determined from the information given.

单项选择题

Each person at a party shook hands exactly once with each of the other people at the party．There was a total of 21 handshakes exchanged at the party．（）

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 the relationship cannot be determined from the information given.