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

It is currently 31 Aug 2015, 07:28
GMAT Club Tests

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

Each day after an item is lost the probability of finding th

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Director
Director
avatar
Status: Up again.
Joined: 31 Oct 2010
Posts: 543
Concentration: Strategy, Operations
GMAT 1: 710 Q48 V40
GMAT 2: 740 Q49 V42
Followers: 17

Kudos [?]: 179 [0], given: 75

Re: Probability: Tricky one [#permalink] New post 02 Feb 2011, 11:07
Ok. So this problem has been officially laid to rest :)
_________________

My GMAT debrief: from-620-to-710-my-gmat-journey-114437.html

Director
Director
avatar
Status: Up again.
Joined: 31 Oct 2010
Posts: 543
Concentration: Strategy, Operations
GMAT 1: 710 Q48 V40
GMAT 2: 740 Q49 V42
Followers: 17

Kudos [?]: 179 [0], given: 75

Re: Probability: Tricky one [#permalink] New post 03 Feb 2011, 01:23
144144 wrote:
so no answer for this one?
can someone give a similar question so i can c if i know how to solve it?

thanks.


The official answer is 1/2, but all members, including me, are getting the answer as 1/8. I will send an email to Bell Curves to see how they justify their explanation. So I guess we'll have to wait till then.

This question is more like fractions/ percentages than probability really. To see similar problems, you can check out problems on successive change in percentages type questions. A similar but not exactly same example:

Q: The population of a town increased by 10% in 2000 and by another 10% in 2001. What is the total percentage change in the population?

There are plenty such problems in this forum as well as prep books such as OG and Kaplan.
_________________

My GMAT debrief: from-620-to-710-my-gmat-journey-114437.html

1 KUDOS received
Intern
Intern
avatar
Joined: 13 May 2013
Posts: 4
Followers: 1

Kudos [?]: 0 [1] , given: 3

PS_May 13g [#permalink] New post 13 May 2013, 04:26
1
This post received
KUDOS
Each day after an item is lost the probability of finding that item is halved. If 3 days after a certain item is lost the probability 1/64, what was the initial probability of finding the item?
a)1/32
b)1/8
c)1/4
d)1/2
e)1
Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 29157
Followers: 4730

Kudos [?]: 49883 [0], given: 7510

Re: PS_May 13g [#permalink] New post 13 May 2013, 04:31
Expert's post
Prep2014 wrote:
Each day after an item is lost the probability of finding that item is halved. If 3 days after a certain item is lost the probability 1/64, what was the initial probability of finding the item?
a)1/32
b)1/8
c)1/4
d)1/2
e)1


Merging similar topics.
_________________

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

PLEASE READ AND FOLLOW: 12 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 ; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) ; 12. 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?
25 extra-hard Quant Tests

GMAT Club Premium Membership - big benefits and savings

Re: PS_May 13g   [#permalink] 13 May 2013, 04:31

Go to page   Previous    1   2   [ 24 posts ] 

    Similar topics Author Replies Last post
Similar
Topics:
1 Experts publish their posts in the topic Anthony and Cindy were each given X dollars in advance for each day th Bunuel 7 20 Jan 2015, 05:46
2 Experts publish their posts in the topic Each month a retailer sells 100 identical items. On each it honchos 8 02 Aug 2014, 12:11
3 The probability of shooting a target increases after a SravnaTestPrep 4 18 Mar 2013, 06:03
2 Experts publish their posts in the topic The price of an item is discounted 10 percent on day 1 of emmak 2 11 Mar 2013, 22:43
35 Experts publish their posts in the topic Each day a man meets his wife at the train station after neoreaves 14 01 May 2010, 08:41
Display posts from previous: Sort by

Each day after an item is lost the probability of finding th

  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®.