这句话的意思是,请证明任意选64天,就至少会有10天是在一个星期的同一天.
可回答：任选连续的64天.一周有七天,无论第一天是周几,七天之后的第八天也是周几,同理,七的倍数之后的那一天也是周几,七乘以九等于六十三,无论所选的第一天是周几,那么第六十四天也是周几.第六十四天是第九个和第一天是一周之中同一天的,连第一天,总共是是个.因此可证明,任意64天,就可以有10天是一周的同一天.
英语回答：
Choose any 64 consecutive days.As there are seven days in one week,the day seven days after the first falls on the same day of the week.Likewise,so does the day the multiple of seven days after the first one.So if you multiply 7 by 9,you get 63,meaning the 64th day falls on the same day of a week as does the first day,and it's the nineth day that does so.Including the first day its self,the ten days fall on the same day of the week.
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