在一组包含10个设备的样品中，有3个故障品。工作人员随机抽取4个设备进行测试，问这些4个中恰好包含1个故障品的概率是多少？（整数组合表示法辅助）

在一组包含10个设备的样品中，有3个故障品。工作人员随机抽取4个设备进行测试，问这些4个中恰好包含1个故障品的概率是多少？（整数组合表示法辅助）

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