Find all School-related info fast with the new School-Specific MBA Forum

It is currently 10 Jul 2014, 11:34

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

update log: tip from gmatt73) Quant strategies Here are a

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 24 Jan 2010
Posts: 164
Location: India
Schools: ISB
Followers: 2

Kudos [?]: 20 [0], given: 14

GMAT Tests User
Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 25 Jul 2010, 03:54
Thanks a lot. Very useful post. I am in a way of compiling such strategies. Will post it soon :)
_________________

_________________
If you like my post, consider giving me a kudos. THANKS!

CEO
CEO
User avatar
Status: Nothing comes easy: neither do I want.
Joined: 12 Oct 2009
Posts: 2793
Location: Malaysia
Concentration: Technology, Entrepreneurship
Schools: ISB '15 (M)
GMAT 1: 670 Q49 V31
GMAT 2: 710 Q50 V35
Followers: 173

Kudos [?]: 879 [0], given: 235

GMAT Tests User Reviews Badge
Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 25 Jul 2010, 04:14
RenukaD wrote:
Thanks a lot. Very useful post. I am in a way of compiling such strategies. Will post it soon :)


We are awaiting more strategies.

thanks :)
_________________

Fight for your dreams :For all those who fear from Verbal- lets give it a fight

Money Saved is the Money Earned :)

Jo Bole So Nihaal , Sat Shri Akaal

:thanks Support GMAT Club by putting a GMAT Club badge on your blog/Facebook :thanks

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Gmat test review :
670-to-710-a-long-journey-without-destination-still-happy-141642.html

Manager
Manager
avatar
Joined: 11 Jun 2010
Posts: 65
Followers: 1

Kudos [?]: 1 [0], given: 14

Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 26 Jul 2010, 03:45
an excellent post!
Intern
Intern
avatar
Joined: 10 Feb 2010
Posts: 34
Followers: 0

Kudos [?]: 1 [0], given: 12

Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 03 Aug 2010, 19:32
great article for the gmat club weekly newsletter! thank you!
Manager
Manager
avatar
Joined: 24 Jul 2010
Posts: 92
Followers: 1

Kudos [?]: 17 [0], given: 12

Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 19 Aug 2010, 23:03
this what i call an excellent job !
Thanks a lot 8-)
Manager
Manager
User avatar
Affiliations: SigEp
Joined: 12 Jun 2010
Posts: 70
Followers: 1

Kudos [?]: 9 [0], given: 9

Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 20 Aug 2010, 08:21
This post is on my final test test checklist to look over, headed to the center now.. Thanks again!
Manager
Manager
avatar
Joined: 17 May 2010
Posts: 122
Location: United States
Concentration: Entrepreneurship, Marketing
Schools: USC (Marshall) - Class of 2013
GMAT 1: 770 Q50 V46
GPA: 3.26
WE: Brand Management (Consumer Products)
Followers: 6

Kudos [?]: 26 [0], given: 5

Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 03 Oct 2010, 00:03
Rubyswtgrl wrote:
Is the answer for Lucky Twin question D?


I first thought it was E, thinking that 6^anything would be an even number, hence 678,463 would not be a multiple of an even number.

But I googled the answer and since the question lists set S as the first 10 non-negative integers, set S *includes* 0 (sneaky question, I was thinking 1, 2, 3, etc.). So since 0 has a 10% chance of being selected, K could = 0, making Z equal to 1, and 678,463 is a multiple of 1. So D = 90% is the correct answer. I guess Lucky Twin worked here :lol: , but my first choice still would have been the above.
_________________

Discipline + Hard Work = Success! 770 (Q50, V46)

Intern
Intern
User avatar
Status: Current Student
Joined: 16 May 2010
Posts: 44
Schools: Darden '13
Followers: 0

Kudos [?]: 6 [0], given: 4

Re: [#permalink] New post 18 Oct 2010, 07:23
GMATT73 wrote:
You can add in "Lucky Twins" to your repertoire

The purpose of this problem is to exploit a weakness used by PVue: complimentary answer choices. Almost always in complimentary probability questions, there are a pair of "LUCKY TWINS" among the answer choices. If in doubt and pressed for time, choose a TWIN by logical deduction.

Let`s take a crack at this Project GMAT bad boy without making lengthy calculations.

Set S consists of numbers 2, 3, 6, 48, and 164. Number K is computed by multiplying one random number from set S by one of the first 10 non-negative integers, also selected at random. If Z=6^K, what is the probability that 678,463 is not a multiple of Z?

a. 10%
b. 25%
c. 50%
d. 90%
e. 100%

*LUCKY TWINS


I don't understand what you mean by "lucky twins". How does that work?
Intern
Intern
avatar
Joined: 17 Jun 2010
Posts: 41
Followers: 1

Kudos [?]: 11 [0], given: 7

Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 22 Oct 2010, 10:46
very helpful indeed!
_________________

Regards,
If you like my post, consider giving me a kudo. THANKS!

Manager
Manager
avatar
Joined: 24 Nov 2010
Posts: 212
Location: United States (CA)
Concentration: Technology, Entrepreneurship
Schools: Ross '15, Duke '15
Followers: 2

Kudos [?]: 31 [0], given: 7

GMAT ToolKit User GMAT Tests User
Re: Re: [#permalink] New post 26 Nov 2010, 22:50
MateoLibre wrote:
GMATT73 wrote:
You can add in "Lucky Twins" to your repertoire

The purpose of this problem is to exploit a weakness used by PVue: complimentary answer choices. Almost always in complimentary probability questions, there are a pair of "LUCKY TWINS" among the answer choices. If in doubt and pressed for time, choose a TWIN by logical deduction.

Let`s take a crack at this Project GMAT bad boy without making lengthy calculations.

Set S consists of numbers 2, 3, 6, 48, and 164. Number K is computed by multiplying one random number from set S by one of the first 10 non-negative integers, also selected at random. If Z=6^K, what is the probability that 678,463 is not a multiple of Z?

a. 10%
b. 25%
c. 50%
d. 90%
e. 100%

*LUCKY TWINS


I don't understand what you mean by "lucky twins". How does that work?


Detailed answer:
Total universe of possibilities for K: [a # from set S]*[0,1,2,..9] = [2*0 = 0, 2*1 = 2, .. 2*9=.... 3*0= 0, 3*1= 3...168*0, 168*1... 168*9] = total of 50 possible values of k.
Out of that we'd have 5 0's. Probability of k being 0 = 5/50 = 1/10. Also, as mentioned in one of the previous posts, 6^0 =1 and 678 or 463 are multiples of 1. So there is a 10% chance that the numbers 678, 463 will be a factor of 6^k. So ans = 100-10 = 90 or d.

Now using the 'logic' of Lucky Twins - 10 and 90 are the only options out of the 5 that are complementary (10=100-90). None of the other options have their complements as options. So by the theory of Lucky Twins we can deduce that the answer is most probably either a or d. Also, since the units digit of 6^k will always be 6 as long as k != 0, the probability of 6^k NOT being a multiple of 678 or 463 should be pretty high. So the answer must be d or 90% and not 10%.
Manager
Manager
avatar
Joined: 26 Dec 2009
Posts: 147
Location: United Kingdom
Concentration: Strategy, Technology
GMAT 1: 500 Q45 V16
WE: Consulting (Computer Software)
Followers: 2

Kudos [?]: 12 [0], given: 10

GMAT Tests User
Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 11 Jan 2011, 12:43
thanks. great post
Manager
Manager
User avatar
Status: Still not there yet!!!
Joined: 11 Jan 2011
Posts: 60
Schools: Waaayyy....in the future - Booth!!
Followers: 2

Kudos [?]: 6 [0], given: 14

Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 10 Feb 2011, 23:01
Ill read it again the night before my exam.thx : )
1 KUDOS received
Manager
Manager
User avatar
Status: 700 (q47,v40); AWA 6.0
Joined: 16 Mar 2011
Posts: 82
GMAT 1: 700 Q47 V40
Followers: 1

Kudos [?]: 35 [1] , given: 3

Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 08 Apr 2011, 00:09
1
This post received
KUDOS
First, let me congratulate necromonger for the enormous amount of detail shared. I think the original post is simply outstanding.

I'd also want to add two specific traps that I've frequently encountered:

1. In questions where Diameter and radius are involved, watch out carefully for what exactly the answer and the question deal in and ensure that the translation of the values between radius and diameter are done at every stage of the solution.

2. One often assumes integer values even if the question is not explicit about the nature of the numbers involved. I did this and have got some practise questions wrong :(

3. Venn-diagram questions and Algebra questions often appear very similar.

I will add more later to this list.
_________________

Regards
Rahul

Joined: 31 Dec 1969
Location: United States
Concentration: Marketing, Other
GMAT 1: 710 Q49 V38
GMAT 2: 660 Q V
GPA: 3.64
WE: Accounting (Accounting)
Followers: 0

Kudos [?]: 49 [0], given: 74586

Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 27 Aug 2011, 14:06
The lone wolf - GREAT TIP!!
Manager
Manager
avatar
Joined: 10 Jan 2010
Posts: 117
GPA: 4
WE: Programming (Computer Software)
Followers: 0

Kudos [?]: 40 [0], given: 33

GMAT Tests User
Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 29 Aug 2011, 16:07
Can somebody please explain me the lone wolf problem with the solution.
_________________

-If you like my post, consider giving KUDOS

Manager
Manager
User avatar
Status: Back to (GMAT) Times Square!!!
Joined: 15 Aug 2011
Posts: 189
Location: United States (IL)
GMAT 1: 650 Q49 V30
WE: Information Technology (Computer Software)
Followers: 1

Kudos [?]: 25 [0], given: 25

GMAT Tests User Reviews Badge
Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 02 Sep 2011, 00:16
Brilliant post! Many thanks!
_________________

Working towards a goal...
V.

Expert Post
Veritas Prep GMAT Instructor
User avatar
Joined: 16 Oct 2010
Posts: 4516
Location: Pune, India
Followers: 1012

Kudos [?]: 4299 [0], given: 161

Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 02 Sep 2011, 02:01
Expert's post
maheshsrini wrote:
Can somebody please explain me the lone wolf problem with the solution.


Here you go:

On a loan, evil necromonger charges X% interest in the first year, and Y% interest in the second. If he loaned Rhyme 20,000$ in 2006, how much Rhyme pay by interest in 2008?"

A) X = 10
B) (X + Y + XY/100) = 100

The intent of the question was to say the following: On a deposit of $20,000, interest is paid at a rate of X% in the first year and at Y% in the second year. What is the total interest paid by the end of second year if no money was withdrawn?

On 20,000, you pay X% interest in the first year.
Interest paid in first year = (X/100) * 20,000

Next year, you pay Y% interest on the total amount.
Interest paid in the second year = (Y/100) * [20,000 + (X/100) * 20,000] = (Y/100)*20,000 + (XY/10,000)*20,000

Total interest paid in the two years = (X/100) * 20,000 + (Y/100)*20,000 + (XY/10,000)*20,000
= 200 * (X + Y + XY/100)

All you need to answer the question is the value of '(X + Y + XY/100)' which statement 2 gives you.
_________________

Karishma
Veritas Prep | GMAT Instructor
My Blog

Save $100 on Veritas Prep GMAT Courses And Admissions Consulting
Enroll now. Pay later. Take advantage of Veritas Prep's flexible payment plan options.

Veritas Prep Reviews

Intern
Intern
avatar
Joined: 04 Aug 2011
Posts: 45
Location: United States
Concentration: Technology, Leadership
GMAT 1: 570 Q45 V25
GPA: 4
WE: Information Technology (Computer Software)
Followers: 0

Kudos [?]: 13 [0], given: 20

Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 14 Jan 2012, 22:41
Fun and super useful post.. As you put it I am set to dig my grave by spenidng too much of time.. Bless my soul :(
Intern
Intern
avatar
Joined: 11 Oct 2010
Posts: 5
Location: Florida
Followers: 0

Kudos [?]: 0 [0], given: 1

Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 16 Jan 2012, 09:05
Printed out as a reference, appreciate it!
Manager
Manager
avatar
Joined: 02 Feb 2012
Posts: 195
Location: United States
GPA: 3.08
Followers: 1

Kudos [?]: 2 [0], given: 104

Re: Trouble with Quant? Some tips/traps that might help you... [#permalink] New post 11 Feb 2012, 16:53
More good material, thanks for these tips.
Re: Trouble with Quant? Some tips/traps that might help you...   [#permalink] 11 Feb 2012, 16:53
    Similar topics Author Replies Last post
Similar
Topics:
Strategy from here- Expert advice would be great!! asuhag 1 22 Aug 2011, 13:36
Experts publish their posts in the topic Quant study tips to reach a 50 from 47. bblast 26 05 May 2011, 23:01
Experts publish their posts in the topic UPDATED! Possible to go from 42 quant to 48 in a few weeks? jimmyjamesdonkey 9 12 Apr 2008, 09:54
First, I wanted to thank GMATT73 for creating the Brutal SC cmns18 0 09 Nov 2006, 15:21
GMATT73 has a fruit. The weight of this fruit is 100 gram gamjatang 8 08 Dec 2005, 08:04
Display posts from previous: Sort by

update log: tip from gmatt73) Quant strategies Here are a

  Question banks Downloads My Bookmarks Reviews Important topics  

Go to page   Previous    1   2   3    Next  [ 45 posts ] 



GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.