# Brain-Teasing Game Challenge: How Many Can You Solve?

1. What is the relationship of “the mother of a horse’s son”?

Notes:
When we hear the description ‘son of the horse’s mother’, we naturally look for a specific person or animal to fulfil the description. However, the actual answer to this description is ‘horse’, because ‘son of the horse’s mother’ means the horse itself. The answer to this riddle is hidden within the description, not in the outside world.

2. If there is a square room with a window on each side, and each window faces south, where is this room located?

Correct Answer:It is located at the North Pole.
Notes:
This question tests the reader’s understanding of geography. If a square room has windows facing south on each side, it must be located at the North Pole, as from any point at the North Pole, all directions are south.

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?

Correct Answer:Put all three eggs into the water at the same time. After 3 minutes, take out one egg, after 5 minutes, take out the second egg, and after 7 minutes, take out the third egg.
Notes:
Place all three eggs into the water at the same time. After 3 minutes, take out one egg; after 5 minutes, take out the second egg; and after 7 minutes, take out the third egg. This way, you can 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?

Notes:
Today is Tuesday, and in three days it will be Wednesday for one day, Thursday for two days, and Friday for three days. After three days it’s Saturday, so it’s Saturday.

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?

Correct Answer: You only need to pick out three balls.
Notes:
You only need to pick out three balls. Regardless of the colors of the first two balls you pick, the third ball will necessarily match one of the first two, ensuring 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?

Correct Answer:You have taken away four, so you have four.
Notes:
This is a riddle. If you take away four apples, you still have those four apples in your possession.

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?

Correct Answer:The back wheel also turns once when the front wheel turns once.
Notes:
The back wheel turns once when the front wheel turns once. This is because the front and back wheels are connected and turn at the same rate.

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?

Correct Answer: The farmer has 30 cows.
Notes:
This is a riddle. The description in the question is a logical trap. In reality, the farmer has 30 cows, as all the cows, including the calves, are female.

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?

Correct Answer: It doesn’t take any time because you are emptying the water, not the pool.
Notes:
This is a riddle. Since the question asks “how long will it take to empty the pool of water,” the answer is that it doesn’t take any time because you are emptying the water, not the pool itself.

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?

Correct Answer: Divide the balls into three groups of four, then weigh two of the groups against each other. If they balance, the lighter ball is in the third group. Then weigh two of the balls from that group, and the lighter one will be revealed.
Notes:
Divide the 12 balls into three groups of four, then weigh two of the groups against each other. If they balance, the lighter ball is in the third group. Then weigh two of the balls from that group, and the lighter one will be revealed.