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Guest
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Post subject: For all positive integers m, m* = 3m when  Posted: Tue Jan 20, 2009 3:40 pm |
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For all positive integers m, m* = 3m when m is odd and m* = m/2 when m is even. Which of the foll is equivalent to (9*) x (6*)
NOTE: ANSWER CHOICES EDITED BY RON ON JULY 9, 2009
1. 81*
2. 54*
3. 36*
4. 27*
5. 18*
Answer : 27*
I got 81 as the answer. Am i missing something ?
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Khalid
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Post subject: Re: GMAT Prep Posted: Wed Jan 21, 2009 3:59 pm |
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Guest wrote: For all positive integers m, m* = 3m when m is odd and m* = m/2 when m is even. Which of the foll is equivalent to (9*) x (6*)
NOTE: ANSWER CHOICES EDITED BY RON ON JULY 9, 2009
1. 81*
2. 54*
3. 36*
4. 27*
5. 18*
Answer : 27.
I got 81 as the answer. Am i missing something ? Tricky question. They are asking which one of the below is equal to the above> 27*= 3 x 27 = 81 = 9*x6*
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RonPurewal
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Post subject: Re: GMAT Prep Posted: Thu Jan 29, 2009 7:19 am |
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| ManhattanGMAT Staff |
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Posts: 7146
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Khalid wrote: Guest wrote: For all positive integers m, m* = 3m when m is odd and m* = m/2 when m is even. Which of the foll is equivalent to (9*) x (6*)
NOTE: ANSWER CHOICES EDITED BY RON ON JULY 9, 2009
1. 81*
2. 54*
3. 36*
4. 27*
5. 18*
Answer : 27.
I got 81 as the answer. Am i missing something ? Tricky question. They are asking which one of the below is equal to the above> 27*= 3 x 27 = 81 = 9*x6* yes. you have to apply the definition to the answer choices, too. be careful! they pull dirty little tricks like this all the time. always read problem statements very, very carefully.and, in the case of short problems like this one, read them again, just to be sure. you really don't want to miss a problem that you understand completely, just because you weren't paying attention.
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Ksenia
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Post subject: Posted: Fri Jan 30, 2009 3:19 pm |
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All the answer choices should be in squares in the original question, in your question square = star sign ("*").
So, the correct answer is 27*
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JonathanSchneider
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Post subject: Re: GMAT Prep Posted: Thu Feb 19, 2009 4:11 pm |
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| ManhattanGMAT Staff |
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Posts: 480
Location: Durham, NC
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Note squares, exactly, because 27^2 is a much larger number. BUT we do need to see that there is an * after each of the numbers in the answer choices, or else 81 is in fact correct.
(The original problem actually shows a * symbol before and after the m, and again before and after each of the answer choices. As posted above, however, the problem would yield the answer that the poster originally came up with. Be careful how you read problems - and post them : )
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commit.gmat
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Post subject: Re: GMAT Prep Posted: Wed Jul 08, 2009 2:37 pm |
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| Course Students |
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Posts: 20
Location: San Francisco
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From the other people's comments, I see that the question is posted incorrectly. Can someone please correct the problem. it is very misleading.
thanks
_________________
Exam Date: July 18 2009
Target Score: 750+
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RonPurewal
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Post subject: Re: GMAT Prep Posted: Fri Jul 10, 2009 7:02 am |
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| ManhattanGMAT Staff |
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Posts: 7146
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commit.gmat wrote: From the other people's comments, I see that the question is posted incorrectly. Can someone please correct the problem. it is very misleading.
thanks done. see above. jonathan was quite new as a moderator when he posted on this thread; he may not have been aware that he had the capacity to edit the other posters' posts.
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goutam.datta
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Post subject: Re: For all positive integers m, m* = 3m when Posted: Wed Jan 26, 2011 5:50 am |
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Posts: 1
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i AM STILL MISSING THE ANSWER, how the answer is 27.
could some one help here please. thx.
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RonPurewal
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Post subject: Re: For all positive integers m, m* = 3m when Posted: Wed Jan 26, 2011 9:26 am |
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| ManhattanGMAT Staff |
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Posts: 7146
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goutam.datta wrote: i AM STILL MISSING THE ANSWER, how the answer is 27.
could some one help here please. thx. it's not 27, it's 27*, with the star. if you follow the directions for the star, you'll find that 27* is 81, which is the answer to the problem.
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