Bill,Jim,Sally and Ann are brothers and sisters.I don't know how old each of them is. I only know one of them is eighteen. One of the boye is sixteen and one of the girle is seventeen.I also know that Bill is older than Sally but Jim isn't older that Sally.
1.How old is Ann? 2.How old is Bill? 3.How old is Jim? 4.How old is Sally?
參考答案:Ann is 17
Bill is 18
jim is 16
sally is 16
