1. A farmer notices that his cows produce more milk on sunny days than on cloudy days. Based on this observation, what can the farmer reasonably conclude?

2. All cats are mammals. Some mammals are carnivores. Based on these statements, which of the following must be true?

3. In a group of 100 people, 70 like chocolate, 80 like vanilla, and 10 don't like either flavor. How many people like both chocolate and vanilla?

4. In a certain code, 'pit na som' means 'bring me water', 'na jo tod' means 'water is life', and 'din pit hod' means 'bring the flower'. What does 'na' mean in that code?

5. In a family, the father is 5 years older than the mother. The mother is three times as old as the son. The son is 4 years older than the daughter. The daughter is 6 years old. How old is the father?

6. In a certain code, COMPUTER is written as RFUVQNPC. How will KEYBOARD be written in that code?

7. All birds can fly. Penguins are birds. Which of the following conclusions can be drawn?

8. In a certain code, FRIEND is written as HUMJTK. How is CANDLE written in that code?

9. In a certain code, HELLO is written as IFNMP. How would WORLD be written in this code?

10. In a row of 20 people, A is 5th from the left end. What is A's position from the right end?