把对称差应用到事件的运算中，得到一些特别的结论，可以简捷地解答一些概率问题。
By applying symmetric difference to the operation of events, we can draw some special formulas and solve some probabilistic problems simply and directly.
把对称差应用到事件的运算中，得到一些特别的结论，可以简捷地解答一些概率问题。
By applying symmetric difference to the operation of events, we can draw some special formulas and solve some probabilistic problems simply and directly.
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