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gmat prep prob solving

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by Rahul@gurome » Wed Sep 01, 2010 7:10 pm
Solution:
Now [m] = 3m if m is odd. and [m] is m/2 if m is even.
Or [9] = 3*9 = 27.
[6] = 6/2 = 3.

So [9]*[6] = 27*3 = 81.
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by rohitjjw » Wed Sep 01, 2010 7:33 pm
Rahul@gurome wrote:Solution:
Now [m] = 3m if m is odd. and [m] is m/2 if m is even.
Or [9] = 3*9 = 27.
[6] = 6/2 = 3.

So [9]*[6] = 27*3 = 81.
thanks for the response........

thats what i had marked in the gmat prep software test but it is showing 27 as right ans.....
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by puneetdua » Wed Sep 01, 2010 11:54 pm
Hi Rohit,

Can you please paste the screenshot of the problem, this will help in reading the exact problem - might be you are missing somehting else the ans shd be 27*3 -> 81.

Thanks
Thanks
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by rohitjjw » Sat Sep 04, 2010 11:02 pm
the exact question is...

for all positive integer m, <m> = 3m when m is odd and <m> = 1/2 when m is even. which of the following is equivalent to <9>*<6>.....

now the ans will be 27 or 81.....
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by selango » Sat Sep 04, 2010 11:41 pm
[m]=3m [when m is odd]

[m]=1/2m [when m is even]

[9]=27 [6]=3

[9]*[6]=27*3=81

But be aware that the answer options are in format [] not simply numbers

81 is equal to [27]

So [27] is the answer.

This question was discussed several times.Since the question not typed properly one s lead to the answer 81.Always please type the question with answer options word by word properly from the source.
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