SAT数学真题
Theleastandgreatestnumbersinalistof7
realnumbersare2and20,respectively.Themedianofthelistis6,andthe
number3occursmostofteninthelist.Whichofthefollowingcouldbethe
average(arithmeticmean)ofthenumbersinthelist?
I.7II.8.5III.10
A.IonlyB.IandIIonlyC.IandIIIonlyD.IIandIIIonlyE.I,IIandIII