a) Will this class be fun?
b) Next year the stock market will go up.
c) Three is a prime number.
d) 5 is an even number.
e) She is shorter than 60 inches.
2) Consider the following implication: "If it is snowing on Friday, then I will go for a walk on Friday." If it is not snowing on Friday and I go for a walk, is the statement still true?
3) For the following implication: "If it is snowing on Friday, then I will go for a walk on Friday."
a) What is the antecedent?
b) What is the consequent?
c) Reword the statement in the form "A is a sufficient condition for B."
d) Reword the statement in the form "B is a necessary condition for A."
4) Use a truth table to show that A B is equivalent to A (B').
A | B | A B | B' | A (B') |
T | T |   |   |   |
T | F |   |   |   |
F | T |   |   |   |
F | F |   |   |   |