Difference between revisions of "2004 AMC 8 Problems/Problem 4"

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Lance, Sally, Joy, and Fred are chosen for the team. In how many ways can the three starters be chosen?
 
Lance, Sally, Joy, and Fred are chosen for the team. In how many ways can the three starters be chosen?
  
<math> \textbf{(A)}2\qquad\textbf{(B)}4\qquad\textbf{(C)}6\qquad\textbf{(D)}8\qquad\textbf{(E)}10 </math>
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<math> \textbf{(A)}\ 2\qquad\textbf{(B)}\ 4\qquad\textbf{(C)}\ 6\qquad\textbf{(D)}\ 8\qquad\textbf{(E)}\ 10 </math>
  
 
== Solution ==
 
== Solution ==
There are <math>\binom{5}{3}</math> ways to choose three starters. Thus the answer is <math>\boxed{\textbf{(B)}\ 4}</math>
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There are <math>\binom{4}{3}</math> ways to choose three starters. Thus the answer is <math>\boxed{\textbf{(B)}\ 4}</math>.
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== Solution 2 ==
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We can choose <math>3</math> people by eliminating one from a set of <math>4</math> one at a time and the other three get selected. There are <math>4</math> ways to remove a person from a group of four (without considering order), so there are <math>\boxed{\textbf{(B)}\ 4}</math> ways to choose three people, where order doesn't matter.
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==See Also==
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{{AMC8 box|year=2004|num-b=3|num-a=5}}
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{{MAA Notice}}

Latest revision as of 09:17, 15 December 2022

Problem

Ms. Hamilton’s eighth-grade class wants to participate in the annual three-person-team basketball tournament.

Lance, Sally, Joy, and Fred are chosen for the team. In how many ways can the three starters be chosen?

$\textbf{(A)}\ 2\qquad\textbf{(B)}\ 4\qquad\textbf{(C)}\ 6\qquad\textbf{(D)}\ 8\qquad\textbf{(E)}\ 10$

Solution

There are $\binom{4}{3}$ ways to choose three starters. Thus the answer is $\boxed{\textbf{(B)}\ 4}$.

Solution 2

We can choose $3$ people by eliminating one from a set of $4$ one at a time and the other three get selected. There are $4$ ways to remove a person from a group of four (without considering order), so there are $\boxed{\textbf{(B)}\ 4}$ ways to choose three people, where order doesn't matter.

See Also

2004 AMC 8 (ProblemsAnswer KeyResources)
Preceded by
Problem 3
Followed by
Problem 5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
All AJHSME/AMC 8 Problems and Solutions

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