我准备在班上组织数学小组共享有趣的题 暂时没分(但是急需)

来源：百度知道 编辑：UC知道 时间：2024/05/31 12:20:49
是不是对提高成绩有好处?
初次尝试请大家提一些建议!!我可不想它解散.
(高二文科)
我们暂时把难题集中起来,每个人都去做

全英挑战赛第一轮的题，试试吧。

A hockey team consists of 1 goalkeeper, 4 defenders, 4 midfielders and 2 forwards. There are 4 substitutes: 1 goalkeeper, 1 defender, 1 midfielder and 1 forward. A substitute may only replace a player of the same category eg: midfielder for midfielder. Given that a maximum of 3 substitutes may be used and that there are still 11 players on the pitch at the end, how many different teams could finish the game?

A. 110
B. 118
C. 121
D. 125
E. 132

第一轮的题，一般都是很有实用性的，呵呵，试试吧。

把一条绳子剪成十份，一共要剪多少下？（9下，因为最后一下一剪就有两份了！）自己试一试吧