2/3,2/3,4/3,8/4( )
A8/3 B16/3 C6 D8
请说明理由!
2/3,2/3,4/3,8/4(A8/3 )
a1=2/3
a2=a1*1=1*2/3=2/3
a2=a1*2=2*2/3=4/3
a3=a1*3=3*2/3=2=8/4
a4=a1/4=4*2/3=8/3