n |
n(n+2) |
观察下面一列有规律的数:1/3,2/8,3/15,4/24,5/35,6/48,…,根据规律可知第n个数应是_(n为正整数).
观察下面一列有规律的数:
,
,
,
,
,
,…,根据规律可知第n个数应是______(n为正整数).
1 |
3 |
2 |
8 |
3 |
15 |
4 |
24 |
5 |
35 |
6 |
48 |
数学人气:570 ℃时间:2019-11-24 16:12:07
优质解答
根据分子和分母的规律可知第n个数为
.
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