(A.) Analyze the logical form of each statement:

(a) I always buy a candy bar every time I go to the store.

(b) Either Im dreaming, or I found a thousand dollars and a diamond ring.

(c) Unless you are at least five feet tall and weigh at least 100 pounds, you are not allowed to ride the roller coaster.

(d) If this article is true, then every time you stay up all night, you lose 1000 brain cells.

(e) In order to pass the class, you must score at least 70 percent on exams or 80 percent on homework.

(B.) For each of the following deductive arguments, use a truth table to determine if the argument is valid or not.

(a) P (P Q)

Therefore P Q.

(b) P R

Q R

R

Therefore P Q.

(c) P (Q R)

R

Therefore Q P.