1. Use the laws of logic to show that ∀x(P(x) ∧ Q(x)) implies that ∀x Q(x) ∧ ∀x P(x).
2. Which of the following arguments are valid? Explain.
A. I have a student in my class who is getting an A. Therefore, John,
a student in my class is getting an A.
B. Every girl scouts who sells at least 50 boxes of cookies will get
a prize. Suzy, a girl scout, got a prize. Therefore Suzy sold 50 boxes
of cookies.