Five dogs--a bloodhound, a collie, a dachshund, a German shepherd, and a Hungarian ridgeback--are being washed by two groomers--Ted and Uma. The dogs will be washed one at a time, and each dog will be washed by only one of the groomers. Ted does not wash the first or last dog. Uma washes three dogs. The collie is not washed by Uma. The bloodhound is washed second.
If Ted washes the German shepherd, what is the second dog that Uma washes?
Uma washes the 1st and 5th dogs. She must also wash the 2nd, 3rd, or 4th dog. Ted must wash the collie, and if he also washes the German shepherd, then he must wash his two dogs in the 3rd and 4th spots (because the bloodhound is washed 2nd). Therefore, the second spot must be Uma washing the bloodhound.