...9×9=99×99=999×999=9999×9999=99999×99999=__
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发布时间:2024-10-01 16:44
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热心网友
时间:2024-10-10 09:17
9×9=81,
99×99=9801,
999×999=998001,
9999×9999=99980001,
99999×99999=9999800001,
999999×999999=999998000001,
9999999×9999999=99999980000001.
故答案为:999999,999999,999998000001; 9999999,9999999,99999980000001.