0.8+0.88+0.888+0.8888+.+0.88888888

0.8+0.88+0.888+0.8888+0.2222(简便） 0.8+0.88+0.888+0.8888+0.88888+0.888888 数列0.8,-0.88,0.888,-0.8888的通项公式 0.8,0.88,0.888,0.8888.的通项公式.谢 0.8＋0.88= 0.8＋0.88＋0.888= 0.8＋0.88＋0.888＋0.8888= 0.8＋0.88＋0. 0.8,0.88,0.888.求通项公式 求数列 0.8,0.88,0.888…的通项公式 根据数列的前n项写出数列的一个通项 （1）-1,-7,-13,19.（2）0.8,0.88,0.888. 0.888*0.8+0.111*1.6简便方法怎么算 0.888*0.8+0.111*3.6的简便计算是什么? 0.88×101+4.8除以0.8简算咋写? 0.88乘101加4.8除以0.8