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# For all positive integers m, m = 3m when m is odd and m =

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Intern
Joined: 06 Jan 2008
Posts: 7

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For all positive integers m, m = 3m when m is odd and m = [#permalink]

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15 Jan 2008, 20:09
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

For all positive integers m, m = 3m when m is odd and m = 1/2m when m is even. Which of the following is equivalent to 9 X 6?

a. 81
b. 54
c. 36
d. 27
e. 18

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Manager
Joined: 16 Dec 2007
Posts: 198

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Location: San Diego,CA
Schools: Kellogg (R2), UCLA (R2)
Re: GMATPREP question # 3 [#permalink]

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15 Jan 2008, 20:20
For all positive integers m, m = 3m when m is odd and m = 1/2m when m is even. Which of the following is equivalent to 9 X 6?

a. 81
b. 54
c. 36
d. 27
e. 18

9 is odd so 9 =9*3=27
6 is even so 6 =6/2=3

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SVP
Joined: 28 Dec 2005
Posts: 1543

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Re: GMATPREP question # 3 [#permalink]

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15 Jan 2008, 20:29
81, same approach as above

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CEO
Joined: 29 Mar 2007
Posts: 2553

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Re: GMATPREP question # 3 [#permalink]

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15 Jan 2008, 20:33
For all positive integers m, m = 3m when m is odd and m = 1/2m when m is even. Which of the following is equivalent to 9 X 6?

a. 81
b. 54
c. 36
d. 27
e. 18

I think ive seen this before. I think we are suppose to express the answer in _ thus D would be the answer.

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Intern
Joined: 06 Jan 2008
Posts: 7

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Re: GMATPREP question # 3 [#permalink]

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15 Jan 2008, 21:13
the right answer is D, and i can't fully understand how they came up with that answer. I choose A like you guys, but it was wrong.

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Manager
Joined: 16 Dec 2007
Posts: 198

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Location: San Diego,CA
Schools: Kellogg (R2), UCLA (R2)
Re: GMATPREP question # 3 [#permalink]

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16 Jan 2008, 12:23
the right answer is D, and i can't fully understand how they came up with that answer. I choose A like you guys, but it was wrong.

I initially got D. If you have to express it in _ numbers than its 27. As 81 is a odd number
_81 =81/3=27

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Re: GMATPREP question # 3   [#permalink] 16 Jan 2008, 12:23
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# For all positive integers m, m = 3m when m is odd and m =

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