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1.7~(1997)+1的末位数是几?(1997,7,1是香港回归的日期,下题同).(安徽准北矿务局石台矿中学刘德235053,安徽淮南三中 王秉春 232007)
What is the last digit of 1.7~(1997)+1?(1997,7,1 is the date of Hong Kong’s return, the same subject is the same).(Juntai Coal Mine Middle School Liude 235053, Anhui Junbix Mining Bureau, Anhui Huainan 3rd Wang Bingchun 232007)