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

It is currently 06 Jul 2015, 12:20

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

What is the 18th digit to the right of the decimal point

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
User avatar
Status: Fighting hard
Joined: 04 Jul 2011
Posts: 72
GMAT Date: 10-01-2012
Followers: 2

Kudos [?]: 33 [0], given: 84

What is the 18th digit to the right of the decimal point [#permalink] New post 08 Nov 2012, 14:57
3
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  65% (hard)

Question Stats:

56% (02:11) correct 44% (01:34) wrong based on 125 sessions
What is the 18th digit to the right of the decimal point in the decimal expansion of 1/37?

(A) 0
(B) 2
(C) 4
(D) 7
(E) 9
[Reveal] Spoiler: OA

_________________

I will rather do nothing than be busy doing nothing - Zen saying

Expert Post
1 KUDOS received
Moderator
Moderator
User avatar
Joined: 01 Sep 2010
Posts: 2634
Followers: 469

Kudos [?]: 3635 [1] , given: 726

Re: What is the 18th digit to the right of the decimal point [#permalink] New post 08 Nov 2012, 16:13
1
This post received
KUDOS
Expert's post
\(\frac{1}{37}\) could be a difficult or at least if not approched well could lead to the wron answer or prone of error

So, do \(\frac{100}{37}\) in this way is more comfortable and in the end you will add 2 zeros

we want the 18 th number and 18 is even

\(\frac{100}{37}\) \(=\) \(270270\) ------------> \(0.0270270\)

Now notice the first number is 0 second 2 third 7 and the fourth again 0

So \(4 * 4 = 16\) in our pattern.

So is \(ZERO\) \(+ 2 = 7\) ( be carefull we are talking of units place not sum)

D is the answer
_________________

COLLECTION OF QUESTIONS
Quant: 1. Bunuel Signature Collection - The Next Generation 2. Bunuel Signature Collection ALL-IN-ONE WITH SOLUTIONS 3. Veritas Prep Blog PDF Version
Verbal:1. Best EXTERNAL resources to tackle the GMAT Verbal Section 2. e-GMAT's ALL CR topics-Consolidated 3. New Critical Reasoning question bank by carcass 4. Meaning/Clarity SC Question Bank by Carcass_Souvik 5. e-GMAT's ALL SC topics-Consolidated-2nd Edition 6. The best reading to improve Reading Comprehension 7.Verbal question bank and Directories

Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 28331
Followers: 4483

Kudos [?]: 45369 [0], given: 6759

Re: What is the 18th digit to the right of the decimal point [#permalink] New post 09 Nov 2012, 02:08
Expert's post
Pansi wrote:
What is the 18th digit to the right of the decimal point in the decimal expansion of 1/37?

(A) 0
(B) 2
(C) 4
(D) 7
(E) 9


1/37=0.027027... So, we have a repeating cycle of 027. Every third digit (3rd, 6th, 9th, ...) to the right of the decimal point is 7, thus 18th digit to the right of the decimal point is also 7.

Answer: D.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

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?
25 extra-hard Quant Tests

GMAT Club Premium Membership - big benefits and savings

GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 09 Sep 2013
Posts: 5389
Followers: 311

Kudos [?]: 60 [0], given: 0

Premium Member
Re: What is the 18th digit to the right of the decimal point [#permalink] New post 09 Sep 2014, 14:37
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

GMAT Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources

Manager
Manager
User avatar
Joined: 21 Jun 2014
Posts: 64
Followers: 0

Kudos [?]: 15 [0], given: 56

Re: What is the 18th digit to the right of the decimal point [#permalink] New post 06 Jul 2015, 07:02
Always remember GMAT never asks for complex calculations .So whenever you see questions like this ,try to identify the pattern .In this case ,the fraction is a recurring decimal 0.027027027... 027 keeps on repeating .18th digit is 3*6 so 7 is the answer

Regards,
Manish Khare
Re: What is the 18th digit to the right of the decimal point   [#permalink] 06 Jul 2015, 07:02
    Similar topics Author Replies Last post
Similar
Topics:
3 How many digits will be there to the right of the decimal vinnik 3 13 Apr 2013, 00:44
13 Experts publish their posts in the topic What is the 25th digit to the right of the decimal point in Bunuel 12 13 Aug 2012, 06:06
2 Experts publish their posts in the topic What is the 99th digit after the decimal point in the carcass 4 10 Mar 2012, 07:23
20 Experts publish their posts in the topic What is the tenth digit to the right of the decimal point gmatpapa 12 18 Feb 2011, 02:37
Point A was the top point, Point B was the bottom right TeHCM 10 05 Feb 2006, 14:10
Display posts from previous: Sort by

What is the 18th digit to the right of the decimal point

  Question banks Downloads My Bookmarks Reviews Important topics  


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®.