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On a 60-question true-false test, Marcy answered correctly all questions she understood, and she guessed randomly on all questions she did not understand. She answered 52 questions correctly on the test. How many questions did Marcy most likely understand?
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· 相关考点
6.4.2 互斥事件与对立事件
6.4.2 互斥事件与对立事件
以上解析由 考满分老师提供。
