单项选择题

For all real numbers u，the operation u* is defined by the equation*=v．If (v*)=8，then v=（）

A. 15
B. 18
C. 21
D. 24
E. 27

<上一题 目录 下一题>
热门 试题

单项选择题
In the figure above，if the sum of each column，row，and five-element diagonal is equal to x，what is the value of p+r（）

A. 13
B. 17
C. 20
D. 23
E. 30
单项选择题
In the equation above，k，r，s，t，and v represent positive numbers． Multiplying which one of these numbers by 2 will reduce the value of n to of its present value（）

A. k
B. r
C. s
D. t
F. v
相关试题