MA 110-06
§1.4 – 2.1 Quiz #2 score
Name:
11 September 2001
1. Write the converse and the contrapositive of the statement “If it rains today, then I will
not play tennis.” Label both. Which statement (if either) is logically equivalent to the
original statement? (6 points)
2. Write the following argument in symbolic form, build the truth table, and determine if
the argument is valid or invalid. (8 points)
If I study enough, then I will do well in my class. If I get a new friend, then I
won’t study enough. Therefore, If I don’t get a new friend, I will do well in my
class.
3. Suppose that our universal set consists of the lower case letters, U={a,b,c,...,m}. Let
A={a, c, e, g , i, k, m}and B={a, d, g, j, m}. Find the set (A ∪B).(6 points)
