北美4月16 - 710(M50V36)

依然jmy

another question: 3 numbers, 10, y, z, ask what is the median of these 3 numbers?
1). someting trnaslates into y + z = 20 (y-13 = 7 - z or something like this).
2). y = 5
Answer should be C.

这道题是不是应该选A，条件一：y+z=20可得到，y,z一个必然>=10，一个<=10，那么无论如何取值，median都应该是10啊？?

求教~~~

sy1103mstr

I think you are right.