Bill,George,Sally and Ann are brothers and sisters.I know that one of them is eighteen,one of them is fifteen,one of the boys is sixteen and one of the girls is seventeen.I also know that bill is older than Sally but Ann isn't.How old are they?2.哪
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Bill,George,Sally and Ann are brothers and sisters.I know that one of them is eighteen,one of them is fifteen,one of the boys is sixteen and one of the girls is seventeen.I also know that bill is older than Sally but Ann isn't.How old are they?2.哪
Bill,George,Sally and Ann are brothers and sisters.I know that one of them is eighteen,one of them is fifteen,one of the boys is sixteen and one of the girls is seventeen.I also know that bill is older than Sally but Ann isn't.How old are they?
2.哪个四个字母的词从左看或从右看是一样的.
3.In which month do people speak last?
1.Bill,George,Sally and Ann are brothers and sisters.I know that one of them is eighteen,one of them is fifteen,one of the boys is sixteen and one of the girls is seventeen.I also know that bill is older than Sally but Ann isn't.How old are they?
2.哪个四个字母的词从左看或从右看是一样的。
3.In which month do people speak last?
Bill,George,Sally and Ann are brothers and sisters.I know that one of them is eighteen,one of them is fifteen,one of the boys is sixteen and one of the girls is seventeen.I also know that bill is older than Sally but Ann isn't.How old are they?2.哪
1.Bill is 18,Sally is 17,George is 16 and Ann is 15.
4个人的年纪分别是
18 17 16 15
且已知 girl boy
由bill is older than Sally,but Ann isn't older than Sally可知,只能有以下关系存在
one boy > one girl > the other girl,所以the other girl只能是15岁,而且她是Ann;
则可知17岁的girl是Sally,则bill是18岁,剩下的一个就是16岁的George.
2 deed
3.this month
由题可知1)Billy>Sally>Anne
2) Bill or George is 16
3) Sally or Ann is 17
由此得出：Billy Sally George Ann
18 17 16 15