字母A、B、C按一定的规律排列:ABBCCCABBCCC ABBCCC…第100个字母是 .
÷10=0.8= : == %
÷ =0.375== :32= %
2:5= :10=10÷ = (填小数)
0.4= : =10: = :35= %
=20÷ =8: =0.8= %= .