what do we know about the truth value of or statements?  

Expert Answers
violy eNotes educator| Certified Educator

Take note that `P vv Q` should be true when both P and Q are true, and false otherwise.

Here is the truth table:

`P`      `Q`         `P vv Q`

`T`      `T`           ` T`

`T`      `F`          `F`

`F`      `T`          `F`

`F`      `F`          `F`

violy eNotes educator| Certified Educator

Take note that `P vv Q`  is true if either P is true or Q is true (or both). It's only false if both P and Q are  is true if either P is true or Q is true (or both). It's only false if both P and Q are false.