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概率源于生活,同时又服务于生活,它在现实生活中的应用非常广泛,许多问题可通过概率知识来解释。物体落在某区域内概率的计算是一种重要的几何概率模型,其解题思想为:事件发生的概率等于此事件所有可能结果所组成的图形面积除以所有可能结果组成图形的面积。
Probability originates from life and at the same time serves life. It is widely used in real life and many problems can be explained by probabilistic knowledge. The calculation of probability that an object falls within an area is an important geometric probability model. The problem-solving idea is that the probability of an event is equal to the area of the graph composed of all possible outcomes of this event divided by the area of all the possible results that compose the graph.