Columbia College

• POSC 210

• The Logic of Collective Choice Exam #1 Jeffrey R. Lax Fall 2015 Name:_________________________________ Fill in answers in the grid on page 4. Usually there is no partial credit for short answers. The blue book is only for scrap work. 1. If my preferences satisfy transitivity, and I prefer zPy and yPx, which one of the following represents all my possible preferences for x and z? a.zIx b.zPx or zIx c.zPx d.zPx or xPz or zIx 2. If my preferences satisfy transitivity, and I prefer zRy and yRx, which one of the following represents all my possible preferences for x and z? a.zIx b.zPx or zIx c.zPx d.zPx or xPz or zIx 3. If my preferences satisfy transitivity, and I prefer zPy and xRy, which one of the following represents all my possible preferences for x and z? a.zIx b.zPx or zIx c.zPx d.zPx or xPz or zIx 4. Suppose W is true and Q is false. Which one of the following is true? a.~ Qà~W b.QàW c.WàQ d.W ∧ Q