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combination/permutation

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combination/permutation [#permalink] New post 26 Dec 2010, 19:30
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Kim is writing a multiple choice test consisting of 8 questions. If each question has 5 answer choices, and Kim answers every question, in how many different ways can she complete the test


40
400
5^8
8^5
40^40

This is permutation or combination question.
[Reveal] Spoiler: OA

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Re: combination/permutation [#permalink] New post 26 Dec 2010, 21:33
shrive555 wrote:
Kim is writing a multiple choice test consisting of 8 questions. If each question has 5 answer choices, and Kim answers every question, in how many different ways can she complete the test


40
400
5^8
8^5
40^40

This is permutation or combination question.


Permutations

I think it shold be D
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Re: combination/permutation [#permalink] New post 27 Dec 2010, 00:01
Ans - C

Number of ways a question can be answered is = 5 (no.of choices)
Total number of questions is = 8
So 5x5x5x5x5x5x5x5 = 5^8
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Re: combination/permutation   [#permalink] 27 Dec 2010, 00:01
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