摘要: 1X1=1 2X1=2 2X2=4 3X1=3 3X2=6 3X3=9 4X1=4 4X2=8 4X3=12 4X4=16 5X1=5 5X2=10 5X3=15 5X4=20 5X5=25 6X1=6 6X2=12 6X3=18 6X4=24 6X5=30 6X6=36 7X1=7 7X2=14 阅读全文
posted @ 2018-03-30 11:44 ywyc 阅读(569) 评论(0) 推荐(0) 编辑