GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 15 Oct 2019, 12:00

### 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

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

# What is the value of 81,918/(10^5 - 10^2)

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 58340
What is the value of 81,918/(10^5 - 10^2)  [#permalink]

### Show Tags

08 May 2015, 06:27
00:00

Difficulty:

45% (medium)

Question Stats:

69% (01:44) correct 31% (01:48) wrong based on 250 sessions

### HideShow timer Statistics

What is the value of 81,918/(10^5 - 10^2)

(A) 8.19
(B) 8.02
(C) 0.89
(D) 0.82
(E) 0.81

Kudos for a correct solution.

_________________
Intern
Joined: 09 Jan 2015
Posts: 8
Re: What is the value of 81,918/(10^5 - 10^2)  [#permalink]

### Show Tags

08 May 2015, 11:40
1
I guess the tricky part here is to avoid the pitfall and not assume that 10^5-10^2=10^3

10^5-10^2=99900 almost 100000
81918/99900 more or less the same as 81918/100000 -> 0,82
Manager
Joined: 09 Jan 2013
Posts: 69
Concentration: Entrepreneurship, Sustainability
GMAT 1: 650 Q45 V34
GMAT 2: 740 Q51 V39
GRE 1: Q790 V650
GPA: 3.76
WE: Other (Pharmaceuticals and Biotech)
Re: What is the value of 81,918/(10^5 - 10^2)  [#permalink]

### Show Tags

09 May 2015, 02:41
1
$$81918/(10^5-10^3) = 81918/10^2(1000-1) = 819.18/999$$
which is slightly greater than 0.819
the nearest solution is 0.82
Director
Joined: 21 May 2013
Posts: 636
Re: What is the value of 81,918/(10^5 - 10^2)  [#permalink]

### Show Tags

09 May 2015, 09:48
1
Bunuel wrote:
What is the value of 81,918/(10^5 - 10^2)

(A) 8.19
(B) 8.02
(C) 0.89
(D) 0.82
(E) 0.81

Kudos for a correct solution.

81918/10^2(10^3-1)
81918/999*10^2
82/10^2
0.82
Math Expert
Joined: 02 Sep 2009
Posts: 58340
Re: What is the value of 81,918/(10^5 - 10^2)  [#permalink]

### Show Tags

11 May 2015, 06:45
Bunuel wrote:
What is the value of 81,918/(10^5 - 10^2)

(A) 8.19
(B) 8.02
(C) 0.89
(D) 0.82
(E) 0.81

Kudos for a correct solution.

MANHATTAN GMAT OFFICIAL SOLUTION:

10^2 is extremely small compared to 105, and the choices are somewhat spread out, so we can estimate:

81,918/(10^5 - 10^2) = 81,918/100,000 = 0.81918

Notice that by ignoring the 10^2 term, we made the denominator slightly larger than it originally was. Therefore 0.81918 is slightly lower than the correct answer. The correct answer is (D) 0.82.
_________________
Board of Directors
Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
Posts: 4778
Location: India
GPA: 3.5
WE: Business Development (Commercial Banking)
Re: What is the value of 81,918/(10^5 - 10^2)  [#permalink]

### Show Tags

15 Nov 2016, 11:26
Bunuel wrote:
What is the value of 81,918/(10^5 - 10^2)

(A) 8.19
(B) 8.02
(C) 0.89
(D) 0.82
(E) 0.81

Kudos for a correct solution.

10^5 - 10^2 = 100000 - 100 => 99900

$$\frac{81918}{99900}$$ = $$0.82$$

Hence, answer will be (D) 0.82
_________________
Thanks and Regards

Abhishek....

PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS

How to use Search Function in GMAT Club | Rules for Posting in QA forum | Writing Mathematical Formulas |Rules for Posting in VA forum | Request Expert's Reply ( VA Forum Only )
Senior Manager
Joined: 06 Jun 2016
Posts: 256
Location: India
Concentration: Operations, Strategy
Schools: ISB '18 (D)
GMAT 1: 600 Q49 V23
GMAT 2: 680 Q49 V34
GPA: 3.9
Re: What is the value of 81,918/(10^5 - 10^2)  [#permalink]

### Show Tags

15 Nov 2016, 22:14
Bunuel wrote:
What is the value of 81,918/(10^5 - 10^2)

(A) 8.19
(B) 8.02
(C) 0.89
(D) 0.82
(E) 0.81

Kudos for a correct solution.

81918/(100000-1000)= 81918/99000==> 81.918/99==> 9.102/11==> 9/11 approx
0.0909*9= 0.8181 corresponds to 0.82 since 9.102 has been approximated to 9
D
Non-Human User
Joined: 09 Sep 2013
Posts: 13172
Re: What is the value of 81,918/(10^5 - 10^2)  [#permalink]

### Show Tags

22 Jan 2018, 12:57
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.
_________________
Re: What is the value of 81,918/(10^5 - 10^2)   [#permalink] 22 Jan 2018, 12:57
Display posts from previous: Sort by

# What is the value of 81,918/(10^5 - 10^2)

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne