There are five persons P, Q, R, S and T. One is football player, one is chess player and one is hockey player. P and S are unmarried ladies and do not participate in any game. None of the ladiesplays chess or football. There is a married couple in which T is the husband. Q is the brother of R and is neither a chese player nor a hockey player.
Who is the football player ?
Clearly, Q is neither a hockey player nor a chess player. So, he must be a football player and thus cannot be a lady. T is a husband (not a lady) and so must be a chess player. Hence, R must be a hockey player, and therefore she must be a lady and T's wife. So, the information can be summarised as follows :
P -- unmarried lady, does not participate in games.
Q -- brother of R, football player.
R -- hockey player, T's wife.
S -- unmarried lady, does not participate in games.
T -- husband of R, chess player
So, Q is the football player.