number problem
1:892
2:951
3:363
4:418
5:301
6:208
7:400
8:522
9:321
10:293
11:212
12:712
13:195
14:570
15:485
16:409
17:414
18:928
19:024
20:665
21:?
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here are 20 groups of data ,and they are selected at random from 000 to 999
based on these numbers ,can you figure out the inner relationship among these datas,and try to predict the 21th group of data?
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