1. All dolphins are mammals. Some mammals live in water. Therefore, some dolphins live in water. This argument is:

2. All A's are B's. No B's are C's. Some C's are D's. Which of the following must be true?

3. A company's profit increased by 25% from 2019 to 2020. If the profit in 2020 was $500,000, what was the profit in 2019?

4. Column A: The average of the first 5 prime numbers | Column B: The median of the first 10 positive integers | Which column is greater?

5. If REASON is coded as 18-5-1-19-15-14, what does 16-1-20-20-5-18-14 represent?

6. Which word does not belong in the group?

7. A company claims that its new energy-efficient light bulbs last 50% longer than traditional bulbs. In a test, the new bulbs lasted an average of 1500 hours compared to 1000 hours for traditional bulbs. Which of the following, if true, most weakens this claim?

8. If X is Y's father and Z is X's sister, how is Z related to Y?

9. In a bookshelf, five books are arranged in a row. The history book is to the left of the science book but to the right of the math book. The literature book is to the right of the science book, and the art book is on the far left. What is the correct order of books from left to right?

10. The athlete's _____ training regimen allowed her to consistently outperform her competitors.