On the investment portfolio of value-added geometric theory

What is the investment portfolio »First of all, we talked about from the throwing of coins bet.

Can continue to assume that there is a duplication of investment or bet their earnings from throwing coins identified, the possibility of two coins the same to you for an A-1 deficit, the B-2 you earn a vote; only assume that you begin to 100 yuan , Can not lose by more. Now ask how can you bet to repeat as soon as possible by the 100 households into millions of households »

We can play like children climbers chess, a few people under different bets, and then repeat throwing coins to see who becomes the first millionaires. You may as soon as possible in order to become millionaires and all Oshiage your money. But as long as the one you lose, you become Qiongguang Dan, and never lost the opportunity to make a fortune. You may bet ten yuan each. However, if Lianshu 10 times, you end. Furthermore, if you have a million households, under 10 yuan is not too few »each time you all will be 10% of the funds used to place bets, perhaps this is a good idea. First of all, you will never end deficit (assuming that the funds can bet infinitesimal); second, if things continue this way, the number of wins deficit roughly equal, you always earned. Assumption that the average twice, once you lose a win, then your money into the original (1 +0.2) × (1-0.1) = 1.08 times. However, to become millionaires such a speed is not too slow, too hasty a person «have a faster way» have! Theoretical research shows that every time you will be all of 25 percent, or 0.25 times used to place bets , You become a millionaire will be the fastest average speed.