A party was held at the house of the Schlobodkins. There were four other
couples present (besides Mr. and Mrs. Schlobodkins), and many, but not all, pairs of people shook hands. Nobody shook hands with anyone twice, and nobody shook hands with his/her spouse. Both the host and the hostess shook some hands. At the end of the party, Mr. Schlobodkins polls every person present to see how many hands each person (other than himself) shook. Each person gives a different answer.Determine how many hands Mrs. Schlobodkins must have shaken.