[姚福荣]2020146期排列3规则分析两胆必下：78
- 独胆
- 7
- 双胆
- 7,8
- 三胆
- 7,8,9
- 杀一码
- 0
- 杀二码
- 0,1
- 杀三码
- 0,1,3
- 五码组选
- 5,6,7,8,9
- 六码组选
- 2,5,6,7,8,9
- 定三跨度
- 3,4,7
- 杀二和尾
- 1,4
- 定四和值
- 8,10,16,23
- 包星两组
- *5*,9**
- 直选定位
- 124,156,469
- 定位5*5*5
- 12459,12568,13469
- 定位杀四码
- 0368,0379,0278
- 胆拖
- 胆码：8,拖码：2,4,5,6,9
- 组选五注
- 472,585,685,695,722
- 组选十注
- 472,485,557,585,589,685,695,722,755,957
- 组选40注
- 248,249,257,258,259,267,269,277,278,279,288,299,447,448,457,459,467,468,469,477,479,489,499,558,567,568,569,577,588,667,668,669,679,688,689,699,778,789,799,899