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

 It is currently 13 Nov 2018, 14:29

### 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

## Events & Promotions

###### Events & Promotions in November
PrevNext
SuMoTuWeThFrSa
28293031123
45678910
11121314151617
18192021222324
2526272829301
Open Detailed Calendar
• ### Essential GMAT Time-Management Hacks

November 14, 2018

November 14, 2018

07:00 PM PST

08:00 PM PST

Join the webinar and learn time-management tactics that will guarantee you answer all questions, in all sections, on time. Save your spot today! Nov. 14th at 7 PM PST

# Which of the following is the second greatest?

Author Message
TAGS:

### Hide Tags

Manager
Joined: 06 Sep 2018
Posts: 151
Location: Pakistan
Concentration: Finance, Operations
GPA: 2.87
WE: Engineering (Other)
Which of the following is the second greatest?  [#permalink]

### Show Tags

Updated on: 07 Sep 2018, 20:22
2
00:00

Difficulty:

65% (hard)

Question Stats:

43% (01:04) correct 57% (01:29) wrong based on 37 sessions

### HideShow timer Statistics

Which of the following is the second greatest?

A) $$.000008$$

B) $$8*10^{-8}$$

C) $$8 ÷ 10^5$$

D) $$\frac{.0008}{1000}$$

E) $$88 ÷ 10^6$$

_________________

Hitting Kudos is the best way of appreciation.

Eric Thomas, "When you want to succeed as bad as you want to breathe, then you'll be successful."

Originally posted by HasnainAfxal on 07 Sep 2018, 18:01.
Last edited by generis on 07 Sep 2018, 20:22, edited 1 time in total.
Formatted the question
Director
Status: Learning stage
Joined: 01 Oct 2017
Posts: 930
WE: Supply Chain Management (Energy and Utilities)
Re: Which of the following is the second greatest?  [#permalink]

### Show Tags

07 Sep 2018, 19:41
Hasnain786 wrote:
Which of the following is the second greatest?

A) $$.000008$$
B) $$8*10^-^8$$
C) $$8 ÷ 10^5$$
D) $$\frac{.0008}{1000}$$
E) $$88 ÷ 10^6$$

Let's write all the numbers in $$a*10^b$$ form:

A. $$.000008$$=$$8*10^{-6}$$
B. $$8*10^{-8}$$
C. $$8 ÷ 10^5$$=$$8*10^{-5}$$
D. $$\frac{.0008}{1000}$$=$$8*10^{-4}*10^{-3}$$=$$8*10^{-7}$$
E. $$88 ÷ 10^6$$=$$8.8*10^{-5}$$

Descending order of magnitude: E>C>A>D>B

Ans. (C)
_________________

Regards,

PKN

Rise above the storm, you will find the sunshine

Math Expert
Joined: 02 Aug 2009
Posts: 7025
Re: Which of the following is the second greatest?  [#permalink]

### Show Tags

07 Sep 2018, 19:43
Which of the following is the second greatest?

get all of them in form 8*10^{-x}
A) $$.000008=8*10^{-6}$$
B) $$8*10^-^8=8*10^{-8}$$
C) $$8 ÷ 10^5=\frac{8}{10^5}=8*10^{-5}$$
D) $$\frac{.0008}{1000}=8*10^{-7}$$
E) $$88 ÷ 10^6=8.8*10^{-5}$$

So the choices in descending order : E, C, A, D, B

So Ans is C
_________________

1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html

GMAT online Tutor

Senior SC Moderator
Joined: 22 May 2016
Posts: 2091
Re: Which of the following is the second greatest?  [#permalink]

### Show Tags

07 Sep 2018, 20:17
Hasnain786 wrote:
Which of the following is the second greatest?

A) $$0.000008$$
B) $$8*10^{-8}$$
C) $$8 ÷ 10^5$$
D) $$\frac{.0008}{1000}$$
E) $$88 ÷ 10^6$$

Rewrite each option. I think decimals are easier.

Given $$10^{-x}$$, $$x$$ = the number of digits to the right of the decimal

A) $$0.000008$$

B) $$8*10^{-8}=0.00000008$$

C) $$8 ÷ 10^5=\frac{8*10^0}{10^5}=$$
$$8*10^{(0-5)}=8*10^{-5}=.00008$$

D) $$\frac{.0008}{1000}=\frac{8*10^{-4}}{10^3}=$$
$$8*10^{(-4-3)}=8*10^{-7}=0.0000008$$

E) $$88 ÷ 10^6=(\frac{88*10^0}{10^6})=$$
$$88*10^{(0-6)}=88*10^{-6}=0.000088$$

A) 0.000008
B) 0.00000008
C) 0.00008
D) 0.0000008
E) 0.000088

Compare each decimal place.
E > C > A > D > B

C is second greatest

Re: Which of the following is the second greatest? &nbs [#permalink] 07 Sep 2018, 20:17
Display posts from previous: Sort by