1.If the number"abcdefgh"times"h"is"111111111",then what num
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1.If the number"abcdefgh"times"h"is"111111111",then what number each letter for?What is the total number of a,b,c,d,e,f,g and
如果abcdegh乘h等于111111111,求a,b,c,d,e,f,g,h分别是多少
因为h*h末尾还是h,所以h为1或9
而1不可能
任何数乘1不会进位
所以h=9
然后就简单了
--abcdefgh
-*-------h
---------------
81近8
所以g*h末尾为11-8=3
所以g=7
63+8近7
所以f*h末尾为11-7=4
所以f=6
同理可推
abcdefgh=12345679
因为h*h末尾还是h,所以h为1或9
而1不可能
任何数乘1不会进位
所以h=9
然后就简单了
--abcdefgh
-*-------h
---------------
81近8
所以g*h末尾为11-8=3
所以g=7
63+8近7
所以f*h末尾为11-7=4
所以f=6
同理可推
abcdefgh=12345679
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