6×9=54 66×9= 666×9= 666‘······十个六×6

问题描述:

6×9=54 66×9= 666×9= 666‘······十个六×6

6×9=54
66×9=(6*9)*11=594
666×9=(6*9)*111=5994
6666*9=(6*9)*1111=59994
......
(10个6)×9=5(9个9)4

6×9=54 66×9=594 666×9=5994
666‘······十个六×6=59(15个9)94

66x9=594
666x9=5994
66...66x9=599..994 (9个9)