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

It is currently 20 Nov 2018, 20:00

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.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in November
PrevNext
SuMoTuWeThFrSa
28293031123
45678910
11121314151617
18192021222324
2526272829301
Open Detailed Calendar
  • All GMAT Club Tests are Free and open on November 22nd in celebration of Thanksgiving Day!

     November 22, 2018

     November 22, 2018

     10:00 PM PST

     11:00 PM PST

    Mark your calendars - All GMAT Club Tests are free and open November 22nd to celebrate Thanksgiving Day! Access will be available from 0:01 AM to 11:59 PM, Pacific Time (USA)
  • Free lesson on number properties

     November 23, 2018

     November 23, 2018

     10:00 PM PST

     11:00 PM PST

    Practice the one most important Quant section - Integer properties, and rapidly improve your skills.

If p and q are positive integers, each of the following can be the val

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

Hide Tags

SVP
SVP
User avatar
V
Status: Preparing GMAT
Joined: 02 Nov 2016
Posts: 1842
Location: Pakistan
GPA: 3.39
Premium Member CAT Tests
If p and q are positive integers, each of the following can be the val  [#permalink]

Show Tags

New post 20 Oct 2018, 04:17
1
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

34% (01:22) correct 66% (01:17) wrong based on 38 sessions

HideShow timer Statistics

If p and q are positive integers, each of the following can be the value of \(\sqrt{200pq}\) except.

A. 20\(\sqrt{q}\)
B. 20\(\sqrt{p}\)
C. 2\(\sqrt{2p}\)
D. 30\(\sqrt{q}\)
E. 300\(\sqrt{q}\)

EG

_________________

Final days of the GMAT Exam? Here is all of GMAT Flashcards.
This Post Helps = +1 Kudos
Best of Luck on the GMAT!!

Math Expert
User avatar
V
Joined: 02 Aug 2009
Posts: 7039
If p and q are positive integers, each of the following can be the val  [#permalink]

Show Tags

New post 20 Oct 2018, 05:29
2
SajjadAhmad wrote:
If p and q are positive integers, each of the following can be the value of \(\sqrt{200pq}\) except.

A. 20\(\sqrt{q}\)
B. 20\(\sqrt{p}\)
C. 2\(\sqrt{2p}\)
D. 30\(\sqrt{q}\)
E. 300\(\sqrt{q}\)

EG


Let us see what MINIMUM quantity should each choice have..
\(\sqrt{200pq}=10\sqrt{2pq}\)

Let us see the choices..

A. 20\(\sqrt{q}\).......yes,p could be 2
B. 20\(\sqrt{p}\)......yes, q could be 2
C. 2\(\sqrt{2p}\).....NO, it has to be 20√(2p) and not 2√(2p)
D. 30\(\sqrt{q}\).....NO, it has to be 30√(2q) atleast
E. 300\(\sqrt{q}\)...yes

So some flaw in one of the two choices C and D, as there cannot be 2 answers
_________________

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 Manager
Senior Manager
avatar
B
Joined: 18 Aug 2017
Posts: 277
Concentration: Healthcare, Marketing
CAT Tests
Re: If p and q are positive integers, each of the following can be the val  [#permalink]

Show Tags

New post 21 Oct 2018, 01:58
If p and q are positive integers, each of the following can be the value of 200pq‾‾‾‾‾‾√200pq except.

A. 20q‾√q
B. 20p‾√p
C. 22p‾‾‾√2p
D. 30q‾√q
E. 300q‾√

Upon doing the factorising 200 : we get 2*10^2

We can say : 10 (2pg)^1/2

From all the answer options the one which wont be correct would be the one without '0' therefore C is right..
Manager
Manager
avatar
G
Joined: 14 Jun 2018
Posts: 188
CAT Tests
Re: If p and q are positive integers, each of the following can be the val  [#permalink]

Show Tags

New post 21 Oct 2018, 02:20
Archit3110 wrote:
If p and q are positive integers, each of the following can be the value of 200pq‾‾‾‾‾‾√200pq except.

A. 20q‾√q
B. 20p‾√p
C. 22p‾‾‾√2p
D. 30q‾√q
E. 300q‾√

Upon doing the factorising 200 : we get 2*10^2

We can say : 10 (2pg)^1/2

From all the answer options the one which wont be correct would be the one without '0' therefore C is right..

For D , 900/200 = 4.5. Also incorrect

C & D are both incorrect
GMAT Club Bot
Re: If p and q are positive integers, each of the following can be the val &nbs [#permalink] 21 Oct 2018, 02:20
Display posts from previous: Sort by

If p and q are positive integers, each of the following can be the val

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


Copyright

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

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

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®.