Do you like puzzles based on logic and reasoning? Try this one: In a certain bank the position of cashier, manager, and teller are held by Brown, Jones, and Smith, though not necessarily in that order. The teller, who was an only child, earns the least. Smith, who married Brown's sister, earns more than the manager. What position does each man fill? If you like to entertain yourself and stretch mental muscles on problems like this or more difficult...