Across
- 3. Which property is represented by a+b=b+a
- 6. Formulas that have the same logical values of the statements variables
- 7. The set of all real numbers that lie between two numbers a and b, a<b
- 8. "if p then q" (p=>q)
Down
- 1. A system in which the main role is played by the number two
- 2. Name of formula statements that are always true
- 4. "p or q" (p v q)
- 5. A narrative sentence that makes sense and is either true or false