Question

Question Which of the following are propositional expressions? 1. The computeris a tablet 2. A tablet computer is the best computer 3. The sky is blue 4. If the sky is blue then unicorns do not have a forehead horn 5. It is not the case the building has ten floors 6. x + 5 = 9 7. 6 + 5 = 9 8. Shelly seems like a good person 9. Is Bob tall? 10. There are ten single digit base ten numbers Question Negate the following propositional expressions. 1. The sky is blue 2. The moon is not made of cheese 3. The grass is wet 4. A bit is computer circuitry 5. C++ and Java-Lare computer languages 6. The subway fare is $2.75 7. It is not the case that the subway fare is $2.50 8. 2 is a prime number 9. It is irrational 10. Chicago is the capital of New York

Answer 1

Answer 1:---------------
Here, All are propositional expressions
except
7. x + 5 = 9
and
10. There are ten single digit base ten numbers.

Answer 2:----------Negation of given propositional expressions ------------

1. The sky is not blue
2. The moon is made of cheese.
3. The grass is not wet.
4. A bit is not computer circuitry.
5. C++ and  Java are not computer languages.
6. The subway fare is not $2.75.
7. The subway fare is $2.50.
8. 2 is not a prime number.
9. π is not irrational.
10. Chicago is not the capital of New York.