求Prep12的一道DS

cher6068

x, 3, 1, 12, 8
If x is an integer, is the median of the 5numbers shown greater than
the average(arithmetic mean) of the 5 numbers?
1) x>6
2) x is greater than the median of the 5 numbers.
百思不得其解, 我选D, 答案是E.......

zhima427

average=(24+x)/5
(1)如果x=7，median=7，average=6.2，median>average；如果x=16，average=8=median；
(2)media=8，x>8，如果x=9，average=6.6，median>average；如果x=16，average=8=median；
如果同时满足条件1、2，同（2）。