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题目内容
A manager oversees 7 employees, including 1 new employee, assigning one or more of them to work on various tasks. The manager will assign 2 employees to work together on a certain task. Of all 21 possible pairs of employees that the manager can choose from the 7 employees to work on the task, the number of pairs that will not include the new employee is how many greater than the number of pairs that will include the new employee?
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· 相关考点
6.3.4 组合
6.3.4 组合
以上解析由 考满分老师提供。