1. Get a non-uniform rope, take 1 hour from the head to the tail, ask how to use a ro turney to time half an hour?
2. Five pirates grab 100 gems, each of them is as large as the value of the city. They decided to do this:? (1) Draw a lot to determine his number (1, 2, 3, 4, 5)? (2) First, the distribution plan is proposed, then everyone vote, when and only more than half of the person When the agreement, according to his program, it will be thrown into the big sea feeding shark? (3) If the 1st is dead, then the distribution plan is proposed, then the remaining 4 people will vote, when and only more than only When half of the people agreed, according to his program, otherwise it will be thrown into the sea to feed shark? (4) Conditional: Condition: Every pirate is very smart, can be rationally judging Thereby making choices. Question: What distribution plan is the first pirate to maximize your income?
3. Why is the cover of the waterway?
4. How many cars have?
5. You let the workers work for 7 days for you, the return is a gold bars, this gold bars are divided into seven sections, you must give them a gold bars at the end of each day. If you only allow you to break the gold bars twice, how do you pay for your workers?
6. A train leaves Beijing from Guangzhou, and another train from Guangzhou to Beijing at the speed of 20 kilometers per hour. If there is a bird, start at the same time and the two trains at the same time, starting from Beijing, returning to the opposite direction after touching another car, so it is in the two trains. Flying until the two trains meet. Excuse me, how long is this bird fly?
7. You have two jars and 50 red playball and 50 blue playball, randomly select a jar, randomly select a playball in a jar, how to give red play ball biggest chance? What is the chance of getting the red ball in your plan?
8. Imagine that you stand before the mirror, please ask, why do you have an image in the mirror to reverse, but can't you reverse it?
9. You have four pills, each pill has a certain weight, the contaminated pill is the weight of the pills that are not contaminated. Only weigh one time, how to determine which can the medicine is contaminated?
10. If you have an infinite water, a 3 liter of rack, a 5 liter, the shape is uneven, ask how can you accurately call 4 liters of water?
11. You have a barrel of jelly, including yellow, green, red, close your eyes to grabbing two colors. How many can you determine if you have two simultaneous jelly?
12. Insert the car key into the door, rotate in which direction can be opened?
13. If you want to remove any one of China's 34 provinces (including autonomous regions, municipalities and Hong Kong and Macao Special Zones and Taiwan), why?
