Across
- 1. A logical connective-upward arrow
- 5. Implication
- 6. Always false
- 8. A logical connective which is true only if the truth value of all the variables are true.
- 10. Always true
Down
- 2. Opposite statement.
- 3. If and only if
- 4. A logical connective which is false only if the truth value of all the variables are false.
- 7. A logical connective-downward arrow
- 9. A declarative sentence that can be assigned any one of the truth values either true or false.