Deduction Intermediate Quiz 1

1. If the safe is locked, the emerald is inside. If the emerald is inside, the alarm is active. The alarm is currently deactivated. What must be true?

2. All valid arguments have true conclusions if their premises are true. Argument X is valid and its premises are true. What follows logically?

3. Either Arthur went to the library or he went to the gym. If he went to the gym, he would have his duffel bag. Arthur does not have his duffel bag. Where did he go?

4. No mammals have feathers. All robins have feathers. What can be deduced about robins?

5. If the compound reacts with acid, it will turn red. If it turns red, it contains copper. The compound did not turn red. What can we deduce?

6. If a person owns a passport, they have verified their citizenship. Clara does not have verified citizenship. What follows logically?

7. All prime numbers greater than 2 are odd numbers. Number Y is a prime number greater than 2. What can be deduced?

8. If you pass the final exam, you pass the course. If you pass the course, you earn 3 credits. You did not earn 3 credits. What follows?

9. No triangles have four internal angles. Polygon X has four internal angles. What can be deduced about Polygon X?

10. If the server is offline, the website displays an error. If the website displays an error, the admin receives a text. The admin has not received a text. What is the server status?