3道题10,11,12,

3道题10,11,12, 3/(10+11)+3/(11+12)+3/(12+13)+. 10/11/12/12 谁能告诉我这100个数字里 12各有几个12,12,3,12,12,11,12,10,12,9,7,12,8,12,5,10,11,5,11,7,11,10,11,11,3,11,11,11,12,12,12,12,2,2,12,4,12,12,12,12,12,12,9,12,9,12,12,10,12,12,12,8,11,11,11,11,1,12,12,10,4,12,12,9,12,12,12,12,12,8,12,5,12,12 计算3/10×11＋3/11×12＋3/12×13＋.+3/19×20 3（110页）10,11,12题的答案.110页，10,11,12题 9,10,11,12 10 11 12 9 10 11 12 10、11、12谢谢, 10,11,12, 10 11 12 13 10 11 12 选择题10 11 12 10 11 12 8,10,11、12, 10、11、12、13 10,11,12,