It can help easily solve the probability problem to master inverse-event formula and plus formula. Yet the formulas should be utilized flexibly not blindly.

 
  • 在求解概率問(wèn)題時(shí),掌握逆事件公式與加法公式的運用,會(huì )使問(wèn)題變得簡(jiǎn)單。但是應根據問(wèn)題實(shí)質(zhì),靈活運用,避免盲目與機械。
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