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Kim is taking a math class, and the teacher gives a multiple choice

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Senior Manager
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Kim is taking a math class, and the teacher gives a multiple choice  [#permalink]

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New post 04 Jul 2016, 10:23
1
5
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

72% (01:02) correct 28% (01:20) wrong based on 133 sessions

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Kim is taking a math class, and the teacher gives 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?

a 40
b 400
c 5^8
d 8^5
e 40^40

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Re: Kim is taking a math class, and the teacher gives a multiple choice  [#permalink]

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New post 04 Jul 2016, 10:27
Each question can be answered in 5 ways (A or B or C or D or E)

8 questions can be answered in 5 * 5 * 5 * ..... 8 times = 5^8 ways

Answer: C
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Re: Kim is taking a math class, and the teacher gives a multiple choice  [#permalink]

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New post 04 Jul 2016, 10:32
I think it should be 40.


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Re: Kim is taking a math class, and the teacher gives a multiple choice  [#permalink]

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New post 04 Jul 2016, 10:36
different ways to solve each question is 5.
So, 5*5*5*5.. 8 times ----> 5^8

Answer will be C.

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Re: Kim is taking a math class, and the teacher gives a multiple choice  [#permalink]

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New post 13 Jul 2016, 08:58
1
rikingajjar wrote:
I think it should be 40.


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total no of questions = 8
each has 5 options
so each of the questions can be done in 5 ways
q1 --> 5
q2 --> 5
.
.
.
.
q8 --> 5
=5*5...*5(8 times)
=5^8
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Re: Kim is taking a math class, and the teacher gives a multiple choice  [#permalink]

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New post 21 Apr 2018, 05:29
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Kim is taking a math class, and the teacher gives a multiple choice &nbs [#permalink] 21 Apr 2018, 05:29
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