题目：
1999减去它的| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
答案
根据题意得：1999×（1-| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 1999 |
=1999×
| 1 |
| 2 |
| 2 |
| 3 |
| 3 |
| 4 |
| 1998 |
| 1999 |
=1999×
| 1 |
| 1999 |
=1．
根据题意得：1999×（1-
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 1999 |
=1999×
| 1 |
| 2 |
| 2 |
| 3 |
| 3 |
| 4 |
| 1998 |
| 1999 |
=1999×
| 1 |
| 1999 |
=1．
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 1999 |
| 1 |
| 2 |
| 2 |
| 3 |
| 3 |
| 4 |
| 1998 |
| 1999 |
| 1 |
| 1999 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 1999 |
| 1 |
| 2 |
| 2 |
| 3 |
| 3 |
| 4 |
| 1998 |
| 1999 |
| 1 |
| 1999 |
（2009·枣庄）如图，骰子是一个质量均匀的小正方体，它的六个面上分别刻有1～6个点．小明仔细观察骰子，发现任意相对两面的点数和都相等．这枚骰子向上的一面的点数是5，它的对面的点数是（ ）