Four people (Ralph, Xena, Vanessa, and Charles) with last names Tavarez, Harris, Ewing, and Usaber, each sold a number of thread spools.
Each person was of a different occupation: undergraduate student, mathematician, janitor, and postal worker.
If each person sold one of the following amounts of thread spools, (11, 7, 20, and 8) can you figure out the first name, last name, and how many thread spools each person sold?
Vanessa went with Usaber to the amusement park one day.
The person who was the undergraduate student. All four people are mentioned in this clue.
Harris wasn't the person who sold 20 thread spools. Neither did Charles nor the undergraduate student.
Xena and Harris once dated the postal worker.
Ralph, and Ewing often watch fights at the janitor's place.
The person who sold 11 thread spools is not named Vanessa or Usaber.
Vanessa is not the person who sold 11 thread spools, nor has the last name Ewing.
The janitor isn't Ralph Usaber.
Ralph, the person who sold 7 thread spools, and the janitor go shopping together on Saturdays.
The person who sold 20 thread spools, Tavarez and Xena all went to the undergraduate student's surprise birthday party.
The person who sold 7 thread spools, Harris, and the mathematician have known each other for years.
Ewing wasn't the person who sold 20 thread spools. Neither did Vanessa nor the mathematician.
The person who sold 8 thread spools, Tavarez, and the undergraduate student have known each other for years.
Vanessa went with Ewing to the amusement park one day.
The person who was the postal worker. All four people are mentioned in this clue.
Charles, Usaber, and the person who sold 8 thread spools each had different dinners last night.
The postal worker, whose first name is Ralph, wasn't the person who sold 8 thread spools.
The postal worker, the person who sold 20 thread spools, didn't want a copy of Harris's book.
Tav
Har
Ewi
Usa
und
mat
jan
pos
11
7
20
8
Ral
Xen
Van
Cha
11
7
20
8
und
mat
jan
pos
Place a N in any square that is a definite "no" and a Y in any square that is a definite "yes". I give up!