题目内容
观察按下列规则排成一列数:
,
,
,
,
,
,
,
,
,
,
,
,
,
,
,…从左起m个数为
,则m的值为______,这m个数的积为______.
| 1 |
| 1 |
| 1 |
| 2 |
| 2 |
| 1 |
| 1 |
| 3 |
| 2 |
| 2 |
| 3 |
| 1 |
| 1 |
| 4 |
| 2 |
| 3 |
| 3 |
| 2 |
| 4 |
| 1 |
| 1 |
| 5 |
| 2 |
| 4 |
| 3 |
| 3 |
| 4 |
| 2 |
| 5 |
| 1 |
| 2 |
| 2009 |
1+2+3+4+…+2009+2,
=2010×2009÷2+2,
=1005×2009+2,
=2019045+2,
=2019047;
1×
×
,
=
;
答:则m的值为 2019047,这m个数的积为
.
故答案为:2019047,
.
=2010×2009÷2+2,
=1005×2009+2,
=2019045+2,
=2019047;
1×
| 1 |
| 2010 |
| 2 |
| 2009 |
=
| 1 |
| 2019045 |
答:则m的值为 2019047,这m个数的积为
| 1 |
| 2019045 |
故答案为:2019047,
| 1 |
| 2019045 |
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