Unit 19 Answers

1.

   a) Reflexive, symmetric, transitive

    b) Antisymmetric

    c) Transitive

2.

    a) Reflexive, antisymmetric, transitive

    b) Symmetric

    c) Symmetric

    d) Antisymmetric

3.

1. {(a) | a lives in your town, and was registered for vote (or voted) in the last election.}
2. {(a) | a lives in your town, and (was registered for vote) and voted in the last election.}