1. What is the relationship of “the mother of a horse’s son”?
2. If there is a square room with a window on each side, and each window faces south, where is this room located?
3. You have an egg that takes 3 minutes to boil, another that takes 5 minutes, and another that takes 7 minutes. You only have one opportunity to boil eggs. How can you determine when all three eggs are boiled using the least amount of time?
4. Today is Tuesday. What day of the week is it in three days?
5. In a box, there are 12 red balls and 12 blue balls. You are blindfolded and need to pick out two balls of the same color. How many balls should you pick to ensure you get at least two of the same color?
6. If you have six apples and you take away four, how many do you have?
7. If the front wheel of a bicycle is 30 inches in diameter and the back wheel is 20 inches in diameter, how many times does the back wheel turn if the front wheel turns once?
8. A farmer has 30 cows, half of them are bulls and the other half are cows. These cows give birth to 30 calves, half of which are bulls and half are cows. How many cows does the farmer have?
9. If a rectangular swimming pool is 20 meters long, 10 meters wide, and 2 meters deep, how long will it take to empty the pool of water?
10. If you have 12 identical balls and one is lighter than the rest, and you only have one chance to use a balance scale, how can you find the lighter ball?
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