625, 69, 19, 17, ( )括号填多少

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625,69,19,17,()括号填多少625,69,19,17,()括号填多少625,69,19,17,()括号填多少5^4+04^3+53^2+102^1+151^0+20=2112

625, 69, 19, 17, ( )括号填多少
625, 69, 19, 17, ( )括号填多少

625, 69, 19, 17, ( )括号填多少
5^4+0 4^3+5 3^2+10 2^1+15 1^0+20=21

12