Matthews used the fact that for any large collection of random numbers, the probability that any two have no common factor is 6/pi2.

马修斯的计算利用了这样一条定理：对于任意一群随机数的大集合，任意两个数没有公约数的概率为6/pi2。

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Probability and risk models for the price of commodity are studied from the demanding factor.

从商品的需求因素出发研究商品价格的概率和风险模型。

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At the same time, the method of time-varying crossover probability factor was adopted to improve the global searching ability and convergence speed of MDE.

同时，采用时变交叉概率因子的方法以提高算法的全局搜索能力和收敛速率。

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That simple 5 factor screen looks for financially healthy, value stocks, with some insider buying and that have a low probability of fraud.

FORBES: Quant / Value Stocks From My Class at Ross