1. Every time John washes his car, it rains the next day. It rained yesterday. Which of the following can be concluded?

2. In a certain code, MOUSE is written as PRUVI. How is SHIFT written in that code?

3. If all A are B, and no B are C, which of the following statements must be true?

4. In a family, there are six members A, B, C, D, E and F. A and B are a married couple, C and D are sisters, E is the only son of A and B, F is the maternal uncle of D. How is C related to E?

5. All the trees in the park are either oak or maple. Some of the trees are diseased. Which of the following must be true?

6. In a group of 5 friends, each person is either always honest or always dishonest. Three of them say, "There are at least 2 honest people among us." The other two say, "There are at most 2 honest people among us." How many honest people are in the group?

7. Every time it rains, the street gets wet. The street is wet. What can you conclude?

8. If all A are B, and some C are B, which of the following statements must be true?

9. If all A are B, and some B are C, which of the following statements must be true?

10. In a certain family, the father is 4 years older than the mother. The mother is 3 times as old as the son. The son is 5 years old. How old is the father?