数学题找规律“( )”是什么数字0.8 ,0.4,0.2,( ),0.05,( )

问题描述:

数学题找规律“( )”是什么数字0.8 ,0.4,0.2,( ),0.05,( )
请说明方法,

0.8 ,0.4,0.2,( 0.1),0.05,(0.025 )
注意前一个是后一个的两倍