Neither of them were lying. The doctors were his sisters.
他们都没有说谎。医生们是他的姐妹。
买和吃之谜
You buy it to eat, but you don’t eat it. What is it?
你买它是为了吃，但你却不吃它，请问这是什么东西？
答案：
A plate, fork, spoon, knife, dining table, etc. The answer can be a lot of things, anything that you use to serve or eat food.
盘子、叉子、勺子、刀子、餐桌等等。答案并不唯一，所有用来盛食物或者进食的物件都可以。
冰茶
两个女孩一起喝冰茶，一个女孩喝了1杯的时间里，另一个女孩喝了5杯，但是：
The girl who drank one died while the other survived. However, all of the drinks that were served turned out to contain poison.
喝了一杯的女孩死了，但是喝5杯的却安然无恙。然而，女孩们喝的冰茶都被下了毒。
为什么活下来的是喝了5杯冰茶的女孩？
答案：
The poison was in the ice. When the girl drank the iced tea, the ice was still fully frozen. Gradually, as the ice cubes melted the poison was released into the drink.
毒在冰块里。当女孩喝冰茶的时候，冰块仍然完全是冻结的。但冰块渐渐融化，毒药就溶进了冰茶里。
5+9
I add five to nine, and get two. The answer is correct, but how?
我用5+9，结果得到2，答案还是正确的，为什么？
答案：
When it is 9am, add 5 hours to it and you will get 2pm.
上午9点+5小时就是下午2点。
公公的妈妈
A man and a woman were travelling on a car. A policeman stopped them at a signal and asked how are they related. The man answered, “Her father-in-law is my father-in-law’s father.”
一男一女驾车出门。一个警察拦住他们问他们是什么关系。男人回答，“她的公公是我岳父的爸爸”。
请问两人什么关系？
答案：
The woman is his mother-in-law.
女人是他的岳母。
5姐妹
All five sisters are busy. Ann is reading a book, Rose is cooking, Katy is playing chess, and Mary is doing the laundry. What is the fifth sister doing?
5姐妹手头都有事。安在读书，露丝在做饭，凯蒂在下象棋，玛丽在洗衣服，请问第5个姐妹在干嘛？
答案：
She is playing chess with Katy.
她在和凯蒂下象棋。
给与得
A boy and a girl each have a bag of containing the same number of jelly beans. How many jelly beans must the boy give the girl so that the girl will have ten more jelly beans than the boy?
The boy must give the girl five jelly beans, not ten.
男孩应该给女孩5个，而不是10个。
男孩少了5个，而女孩多了5个，这样两人的差就是10。
国王的失窃案
A king in England has a jewel, a dog, and a crown. A thief comes in the middle of a night and takes the dog and yet the next day the king reports that he has two missing items. The king said the truth and there was only one robbery that happened. How is this possible?
