Anne, Olivia and Jenita are daughters of Mr.Jack, Mr.Brown and Mr.Ran. Four of these people are playing badminton doubles. Mr.Rans daughter and Mr.Jack are partners. Annes father and Mr.Browns daughter are also partners. There are not any father-daughter combinations. Who is Annes father? Solution As there are not any father-daughter combinations, Mr.Brown is not Anne\'s father. Anne can play with Mr.Jack, so he cannot be his father. Therefore, Mr.Ran is Anne\'s father..