找规律填数, 1,4,10,19,21.( ),( ) 37,31,25,21,18,( ),(

2025-07-10 17:37:19
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回答1:

1,4,10,19,21,(25),(31).
相邻两数依次是+3、+6、+9、+2、+4、+6.
37,31,25,21,18,(16),(15)
相邻两数依次是-6、-6、-4、-3、-2、-1.