一类古典概型的公式解

Formula Solutions for A Kind of Classical Probability Problems

针对一类古典概型,通过将基本事件数转化为不定方程的解的个数,并利用组合方法将其求出,进而可以得到该古典概型的公式解.

For a special kind of classical probability problems, this paper obtains a general formula solution by introducing a technique of converting the number of simple events into the number of solutions of Diophantine equations, which can be calculated using combinatorial method.