Week 1

Question 1

∧ ?

Answer 1

True only when both inputs are true

Question 2

∨ ?

Answer 2

True if at least one input is true

Question 3

→ ?

Answer 3

True unless the first is true and the second is false.

Question 4

↔ ?

Answer 4

-True when both inputs are the same

Question 5

∀ ?

Answer 5

• for all values

Question 6

Contrapositive?

Answer 6

• switch around and negate both

Question 7

Converse?

Answer 7

• switch around

Question 8

Proof by contradiction?

Answer 8

-try to prove the reverse statement is true and try to find a mistake

Question 9

Proof by contradiction truth table?

Answer 9

• negate normal term show in truth table equal to p ∧ (¬q)