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OpenStudy (anonymous):
How many ways can you select 3 finalists from a group of 10 contestants? I need solution as well. Thanks!
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OpenStudy (anonymous):
combination of 3 out of 10
OpenStudy (anonymous):
10!/(10-3)! * 3!
OpenStudy (anonymous):
answer is 240
OpenStudy (anonymous):
Why is the solution not 10x9x8?
OpenStudy (anonymous):
it is 10x9x8/3x2x1
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OpenStudy (anonymous):
have u studied combinations and premutations yet
OpenStudy (anonymous):
Not yet. Although I tried to study that lesson by myself, but I still get confused at times. Is this problem a combination or permutation problem?
OpenStudy (anonymous):
combination
OpenStudy (anonymous):
it is easy chapter
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