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Math Expert
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Re: GMAT Diagnostic Test  Quest for Best GMAT Diagnostic Test
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23 Dec 2012, 04:50



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Re: GMAT Diagnostic Test  Quest for Best GMAT Diagnostic Test
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24 Dec 2012, 19:19
Thank your guys for this great resource. Noticed the following problems when I tried it (12/24/2012):
1. Take test online link does not work. 2. Typo on question 16 , option 1. should be "Set T" instead of "Set S". 3. Missing solution to Question 21 (link does not work). 4. Question 33. It would help if the question stated that mixture consisted "only" of chestnuts and walnuts. Otherwise drawing the inference Y=1X (as should be used in order to get to a solution) does not seem intuitive.



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Re: GMAT Diagnostic Test  Quest for Best GMAT Diagnostic Test
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12 Jan 2013, 05:56
The explanation to the 19th question, I think, has a small typo when it says: "The set could be {20, 21, 22, 23, 24, 25, 26, 27, 26, 29, 70}" Since they all have to be different integers the third to last should be 28, probably.
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Re: GMAT Diagnostic Test  Quest for Best GMAT Diagnostic Test
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06 Mar 2013, 02:13
Hi, I have recently started preparing for GMAT and have just now become an active member of the forum. I will surely be downloading these questions. These questions were uploaded in 2009, I don't know, if solving these questions help me, since it has been more than 3 years since the questions were made. Kindly help. Please let me know, in how much time, should a student solve these question and what should be his score in order to achieve excellent score in GMAT.
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Re: GMAT Diagnostic Test  Quest for Best GMAT Diagnostic Test
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06 Mar 2013, 02:17
Thoughtosphere wrote: Hi, I have recently started preparing for GMAT and have just now become an active member of the forum. I will surely be downloading these questions. These questions were uploaded in 2009, I don't know, if solving these questions help me, since it has been more than 3 years since the questions were made.
Kindly help.
Please let me know, in how much time, should a student solve these question and what should be his score in order to achieve excellent score in GMAT. GMAT Club math questions are harder than those appearing on the GMAT, so usually students spend more than 2 minutes on solving them.
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New to the Math Forum? Please read this: Ultimate GMAT Quantitative Megathread  All You Need for Quant  PLEASE READ AND FOLLOW: 12 Rules for Posting!!! Resources: GMAT Math Book  Triangles  Polygons  Coordinate Geometry  Factorials  Circles  Number Theory  Remainders; 8. Overlapping Sets  PDF of Math Book; 10. Remainders  GMAT Prep Software Analysis  SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS)  Tricky questions from previous years.
Collection of Questions: PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.
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Re: GMAT Diagnostic Test  Quest for Best GMAT Diagnostic Test
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06 Mar 2013, 20:17
I got 10/15 on the lower level, 11/15 on the medium level, and 9/15 on the upper level. This was pretty tough  I got 30/45 total, and only got 10 of the last 21 correct. Not sure if I was tired or just bad at those topics.
I took the official GMAT practice exam and got a 740  48Q and 44V. But I got smoked on this exam. Are there any materials to analyze this exam on this site? I looked around but it's a bit confusing.



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Re: GMAT Diagnostic Test  Quest for Best GMAT Diagnostic Test
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19 Mar 2013, 05:55
Dear Gmatclub members, Could you please confirm if one should take this test "before reading all the material" or "post reading all the material" . Since the name is a diagnostic test, I am assuming, one should take it before one starts preparing. But, if its not the case, i don't want to take the test and get disappointed by looking at poor scores! Please advise
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Re: GMAT Diagnostic Test  Quest for Best GMAT Diagnostic Test
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20 Mar 2013, 04:10



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21 Mar 2013, 07:00
Thank you very much. Just signed up for the forum today and I am really looking forward to exchange ideas with all of you here.



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Re: GMAT Diagnostic Test  Quest for Best GMAT Diagnostic Test
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31 May 2013, 23:35
First of all thanks BB and others for this wonderful test. Really Hats off to all the guys!! After totally out of touch from studies for last 56 years, I took this practice diagnostic test and as expected got only 20 out of 45. Took around 2mins 45 secs for each questions ( used the timer downloaded from gmatclub). I am planning to appear for the actual test by end of this year (dec '13). My first basic silly question : Do I really have any chance to achieve a target of 650700? Another question is what should be my approach, brush up the basics of quant & and then try another time for the same test and analyze my performance or take some other diagnostic test (from gmat club)? Experts please guide. Thanks once again !!



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Re: GMAT Diagnostic Test  Quest for Best GMAT Diagnostic Test
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11 Jun 2013, 18:06
Thanks for the awesome post. Q 12 of d01 of the online version (it is different from pdf version) Quote: If x= 4th root(x^3 + 6x^2) , then the sum of all possible solutions for x is:
a) 2 b) 0 c) 1 d) 3 e) 5 According to me, the answer should be c. But, OA is d. The explanation says, x cannot be negative, because even with a negative value of x, the equality holds. Moreover, the question is talking about all possible solutions of x, not just real solutions.



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12 Jun 2013, 00:22
Maverick_Indian wrote: Thanks for the awesome post. Q 12 of d01 of the online version (it is different from pdf version) Quote: If x= 4th root(x^3 + 6x^2) , then the sum of all possible solutions for x is:
a) 2 b) 0 c) 1 d) 3 e) 5 According to me, the answer should be c. But, OA is d. The explanation says, x cannot be negative, because even with a negative value of x, the equality holds. Moreover, the question is talking about all possible solutions of x, not just real solutions. No, C is not correct. If you substitute x=2 the equation will NOT hold true. Also, note that ALL numbers used on the GMAT are real numbers. Check: newalgebraset14934960.html#p1200948newalgebraset14934980.html#p1202620newalgebraset149349100.html#p1228245Hope it helps.
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New to the Math Forum? Please read this: Ultimate GMAT Quantitative Megathread  All You Need for Quant  PLEASE READ AND FOLLOW: 12 Rules for Posting!!! Resources: GMAT Math Book  Triangles  Polygons  Coordinate Geometry  Factorials  Circles  Number Theory  Remainders; 8. Overlapping Sets  PDF of Math Book; 10. Remainders  GMAT Prep Software Analysis  SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS)  Tricky questions from previous years.
Collection of Questions: PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.
What are GMAT Club Tests? Extrahard Quant Tests with Brilliant Analytics



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Re: GMAT Diagnostic Test  Quest for Best GMAT Diagnostic Test
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12 Jun 2013, 11:21
Bunuel wrote: If you substitute x=2 the equation will NOT hold true. Also, note that ALL numbers used on the GMAT are real numbers.
Hope it helps.
If you substitute x=2. It becomes LHS = 2 RHS = 4th root (8+24) = 4th root (16) = +/2 (because in the question it is not mentioned that x is only +ve) So, equality holds true for x=2. In the solutions in each of the posts it is mentioned that \sqrt{expression} >=0, which is not true. Square root of a number can be +/ a number. Similarly 4th root of a number can be +ve or ve. But, 4th power of a number will always be +ve. So, in the expression in question. X can be + or . But, (x^3 + 6x^2) should always be greater than or equal to 0. 16 = (2)^4 or 16 = (2)^4



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Re: GMAT Diagnostic Test  Quest for Best GMAT Diagnostic Test
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12 Jun 2013, 12:19
Maverick_Indian wrote: Bunuel wrote: If you substitute x=2 the equation will NOT hold true. Also, note that ALL numbers used on the GMAT are real numbers.
Hope it helps.
If you substitute x=2. It becomes LHS = 2 RHS = 4th root (8+24) = 4th root (16) = +/2 (because in the question it is not mentioned that x is only +ve) So, equality holds true for x=2. In the solutions in each of the posts it is mentioned that \sqrt{expression} >=0, which is not true. Square root of a number can be +/ a number. Similarly 4th root of a number can be +ve or ve. But, 4th power of a number will always be +ve. So, in the expression in question. X can be + or . But, (x^3 + 6x^2) should always be greater than or equal to 0. 16 = (2)^4 or 16 = (2)^4 Again, if you substitute x=2 into \(x=\sqrt[4]{x^3+6x^2}\) the equation will NOT hold: \(2\neq{\sqrt[4]{16}=2\) Please post your doubts here: newalgebraset14934960.html
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New to the Math Forum? Please read this: Ultimate GMAT Quantitative Megathread  All You Need for Quant  PLEASE READ AND FOLLOW: 12 Rules for Posting!!! Resources: GMAT Math Book  Triangles  Polygons  Coordinate Geometry  Factorials  Circles  Number Theory  Remainders; 8. Overlapping Sets  PDF of Math Book; 10. Remainders  GMAT Prep Software Analysis  SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS)  Tricky questions from previous years.
Collection of Questions: PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.
What are GMAT Club Tests? Extrahard Quant Tests with Brilliant Analytics



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Re: GMAT Diagnostic Test  Quest for Best GMAT Diagnostic Test
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29 Aug 2013, 07:51
We have had a major update to the Diagnostic test: Over 50% of questions have been revised or replaced The new PDF has been published We have updated the links The answer sheet has also been updated... in other words  everything was updated Please see the first post of this discussion for the downloads, files, and links.
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Re: GMAT Diagnostic Test  Quest for Best GMAT Diagnostic Test
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24 Sep 2013, 21:27
great tool!
I believe question 8 is incorrect. It seems as if the question has been updated but not the answer and link in the excelfile. Shouldn´t it be: A > 7/11 = 0,63636363



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Re: GMAT Diagnostic Test  Quest for Best GMAT Diagnostic Test
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24 Sep 2013, 22:20
ludvignylin wrote: great tool!
I believe question 8 is incorrect. It seems as if the question has been updated but not the answer and link in the excelfile. Shouldn´t it be: A > 7/11 = 0,63636363 Thanks, let me update the spreadsheet/links. It seems we have lost a version as they seemed to have been updated.
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Re: GMAT Diagnostic Test  Quest for Best GMAT Diagnostic Test
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28 Sep 2013, 10:04
The link for question number 4 doesnt seem to work. It says "you are not authorized to view this"



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28 Sep 2013, 12:06
Thank you. I have been working on the diag test this morning/afternoon (and still working on it actually  moving some questions around and rearranging the questions). I think you probably caught me during my update when I messed a few things up Should be done by Monday.
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29 Sep 2013, 21:12
I have an update to the doc coming. The links have been aligned with the new doc/PDF. If you are using an old one (and current one) please see a question ahead/back. I should have the new PDF posted within a day. Thanks for your patience!
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