AMC8 2004
AMC8 2004 · Q4
AMC8 2004 · Q4. It mainly tests Combinations.
Lance, Sally, Joy and Fred are chosen for the team. In how many ways can the three starters be chosen?
Lance、Sally、Joy和Fred被选入球队。有多少种方法可以选择三个首发？
(A)
2
2
(B)
4
4
(C)
6
6
(D)
8
8
(E)
10
10
Answer
Correct choice: (B)
正确答案：（B）
Solution
(B) When three players start, one is the alternate. Because any of the four players might be the alternate, there are four ways to select a starting team: Lance-Sally-Joy, Lance-Sally-Fred, Lance-Joy-Fred and Sally-Joy-Fred.
（B）当三名球员首发时，其中一人是替补。由于四名球员中的任何一位都可能是替补，因此有四种方式选择首发阵容：Lance-Sally-Joy、Lance-Sally-Fred、Lance-Joy-Fred 以及 Sally-Joy-Fred。
Topics
Related Questions
Practice full AMC exams on amcdrill.
Try full-length practice and diagnostics at www.amcdrill.com.