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

 It is currently 24 Aug 2016, 18:10

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 June
Open Detailed Calendar

M04 #12

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Intern
Joined: 25 Feb 2007
Posts: 1
Followers: 0

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

Show Tags

10 Aug 2008, 12:56
1
KUDOS
1
This post was
BOOKMARKED
Distinct points A, B, C, D form a right triangle ABC with a height BD. What is the value of AB times BC?

1. AB=6
2. The product of the non-hypotenuse sides is equal to 24

REVISED VERSION OF THIS QUESTION WITH A SOLUTION: m04-68703-80.html#p1108189
Intern
Affiliations: ACCA
Joined: 17 Apr 2010
Posts: 34
Schools: IMD, Insead, LBS, IE, Cambridge, Oxford
Followers: 0

Kudos [?]: 13 [7] , given: 2

Re: M04 #12 [#permalink]

Show Tags

20 Jul 2010, 06:05
7
KUDOS
hope this will help
Attachments

gmat 2.pptx [60.7 KiB]

GMAT.JPG [ 16.55 KiB | Viewed 7066 times ]

Math Expert
Joined: 02 Sep 2009
Posts: 34420
Followers: 6251

Kudos [?]: 79415 [3] , given: 10016

Re: M04 #12 [#permalink]

Show Tags

27 Jul 2012, 08:25
3
KUDOS
Expert's post
BELOW IS REVISED VERSION OF THIS QUESTION WITH A SOLUTION:

A, B, C, and D are distinct points on a plane. If triangle ABC is a right angled and BD is a height of this triangle, what is the value of AB times BC ?

Since all points are distinct and BD is a height then B must be a right angle and AC must be a hypotenuse (so BD is a height from right angle B to the hypotenuse AC). Question thus asks about the product of non-hypotenuse sides AB and BC.

(1) AB = 6. Clearly insufficient.
(2) The product of the non-hypotenuse sides is equal to 24 --> directly gives us the value of AB*BC. Sufficient.

Hope it's clear.
_________________
Manager
Joined: 04 Sep 2010
Posts: 51
Followers: 2

Kudos [?]: 1 [2] , given: 1

Show Tags

10 Oct 2010, 06:07
2
KUDOS
ans will be B only..as we have to find ab*bc..which is given in 2 stmt..
SVP
Joined: 29 Aug 2007
Posts: 2492
Followers: 66

Kudos [?]: 692 [1] , given: 19

Re: m04, Q 12 [#permalink]

Show Tags

31 Oct 2008, 09:35
1
KUDOS
ritula wrote:
Guys , I think I cldnt explain my problem. Im not talking of OA. OA is B indeed 2 which i agree. My question is why is point D given in the question. there is no need for this. In case its a triangle, there have 2b only 3 points na? also BD height is confusing me.

D is given to make question tough and intresting. Also it gave a twist in the question.
The way this question is designed, D is required and correctly signals the right angle as well.
_________________

Gmat: http://gmatclub.com/forum/everything-you-need-to-prepare-for-the-gmat-revised-77983.html

GT

Intern
Joined: 21 Nov 2008
Posts: 13
Followers: 0

Kudos [?]: 13 [1] , given: 0

Re: m04, Q 12 [#permalink]

Show Tags

05 Dec 2008, 11:02
1
KUDOS
GMAT TIGER wrote:
ritula wrote:
Guys , I think I cldnt explain my problem. Im not talking of OA. OA is B indeed 2 which i agree. My question is why is point D given in the question. there is no need for this. In case its a triangle, there have 2b only 3 points na? also BD height is confusing me.

D is given to make question tough and intresting. Also it gave a twist in the question.
The way this question is designed, D is required and correctly signals the right angle as well.

BD is the Height to the Hypotenuse.
In the right trinagle the non hypotenuse sides are the other heigts of the triangle. It is given in order to identify the Hypotenuse.
SVP
Joined: 16 Jul 2009
Posts: 1629
Schools: CBS
WE 1: 4 years (Consulting)
Followers: 39

Kudos [?]: 873 [1] , given: 2

Show Tags

10 Oct 2009, 15:37
1
KUDOS
If distinct points A, B, C , and D form a right triangle ABC with a height BD , what is the value of AB times BC ?

1) AB=6
2) The product of the non-hypotenuse sides is equal to 24
_________________

The sky is the limit
800 is the limit

GMAT Club Premium Membership - big benefits and savings

Senior Manager
Joined: 18 Aug 2009
Posts: 435
Schools: UT at Austin, Indiana State University, UC at Berkeley
WE 1: 5.5
WE 2: 5.5
WE 3: 6.0
Followers: 6

Kudos [?]: 110 [1] , given: 16

Show Tags

10 Oct 2009, 17:14
1
KUDOS
Since the triangle has ABC as a right triangle, the square of the triangle would be multiple of two non hypothenuse sides of the triangle divided by two.
Statement ! just provides us with the information about the measurement of side AB
Not sufficient.

Hence, we know that 2) The product of the non-hypotenuse sides is equal to 24, which is multiple of sides AB and BC (reuqired sides)
We can conclude that Statement 2 is sufficient to answer the question.

Please, give me kudos, if you like my answer...
_________________

Never give up,,,

Senior Manager
Joined: 01 Mar 2009
Posts: 372
Location: PDX
Followers: 6

Kudos [?]: 80 [1] , given: 24

Show Tags

08 Nov 2009, 16:31
1
KUDOS
The point D is a misleading trap here. You don't need that information.

Rt Triangle ABC - What's AB *BC - or one leg * hypotenuse

Statement 1 - not enough clearly

Statement 2 - product of two legs given,
using the theorm hypotenuse^2 = leg1^2 + leg2^2
leg1 *leg2 = 24.

Asked to find leg1*hypotenuse. From the above two equations it can easily be determined. Hence B is sufficient.
_________________

In the land of the night, the chariot of the sun is drawn by the grateful dead

Intern
Joined: 28 Jun 2010
Posts: 8
Followers: 0

Kudos [?]: 13 [1] , given: 41

Re: M04 #12 [#permalink]

Show Tags

20 Jul 2010, 05:07
1
KUDOS
This is a tricky one
Intern
Joined: 28 Jun 2010
Posts: 8
Followers: 0

Kudos [?]: 13 [1] , given: 41

Re: M04 #12 [#permalink]

Show Tags

20 Jul 2010, 05:11
1
KUDOS
Since all points are distinct and BD is the height...D lies on AC and AC is hypotenueus.
The right angle is formed at B.
In all other scenarios, D equals either A/C

Senior Manager
Affiliations: CFA
Joined: 21 Dec 2008
Posts: 385
Location: United States (NY)
Schools: Columbia - Class of 2013
GMAT 1: 710 Q45 V43
GMAT 2: 760 Q49 V45
Followers: 22

Kudos [?]: 119 [1] , given: 64

Re: M04 #12 [#permalink]

Show Tags

20 Jul 2010, 07:10
1
KUDOS
The triangle looks like this:

BD being the height establishes that B must be across from the hypotenuse. This means AB and BA are the legs of the triangle.
_________________
Manager
Joined: 13 May 2010
Posts: 124
Followers: 0

Kudos [?]: 11 [1] , given: 4

Re: M04 #12 [#permalink]

Show Tags

31 Aug 2011, 06:40
1
KUDOS
ABC is a right triangle......the right angle can be any one out of A, B or C? Why does it have to be only B?
Manager
Joined: 24 Nov 2010
Posts: 210
Location: United States (CA)
Concentration: Technology, Entrepreneurship
Schools: Ross '15, Duke '15
Followers: 2

Kudos [?]: 69 [1] , given: 7

Re: M04 #12 [#permalink]

Show Tags

05 Sep 2011, 14:49
1
KUDOS
I just took this test.

I assumed that D should be a distinct pt. However, if the triangle is right-angled at A then the altitude BD can be drawn outside the triangular region ABC such that the BD will be parallel to AB or AC. In this case, the value of AB*BC will be 6*sqrt(52), which is different from the ans that we get if we assume that the triangle is right angled at B.

Please let me know if it I'm missing something.
SVP
Joined: 30 Apr 2008
Posts: 1888
Location: Oklahoma City
Schools: Hard Knocks
Followers: 39

Kudos [?]: 537 [0], given: 32

Show Tags

11 Aug 2008, 22:34
Unless one of your points is on one of the straight lines, you have a quadrilateral and not a triangle.
_________________

------------------------------------
J Allen Morris
**I'm pretty sure I'm right, but then again, I'm just a guy with his head up his a.

GMAT Club Premium Membership - big benefits and savings

SVP
Joined: 07 Nov 2007
Posts: 1820
Location: New York
Followers: 30

Kudos [?]: 773 [0], given: 5

Show Tags

14 Aug 2008, 13:12
Tvisha wrote:
Distinct points A , B , C , D form a right triangle with a height . What is the value of AB times BC?

1. AB=6
2. The product of the non-hypotenuse sides is equal to 24

could any one explain this?

Can you check the question.. looks like something missing.
_________________

Smiling wins more friends than frowning

CIO
Joined: 02 Oct 2007
Posts: 1218
Followers: 95

Kudos [?]: 875 [0], given: 334

Show Tags

21 Aug 2008, 01:44
Tvisha wrote:
Distinct points A , B , C , D form a right triangle ABC with a height BD. What is the value of AB times BC?

1. AB=6
2. The product of the non-hypotenuse sides is equal to 24

could any one explain this?

I've added the missing text.
_________________

Welcome to GMAT Club!

Want to solve GMAT questions on the go? GMAT Club iPhone app will help.
Please read this before posting in GMAT Club Tests forum
Result correlation between real GMAT and GMAT Club Tests
Are GMAT Club Test sets ordered in any way?

Take 15 free tests with questions from GMAT Club, Knewton, Manhattan GMAT, and Veritas.

GMAT Club Premium Membership - big benefits and savings

SVP
Joined: 07 Nov 2007
Posts: 1820
Location: New York
Followers: 30

Kudos [?]: 773 [0], given: 5

Show Tags

21 Aug 2008, 07:20
dzyubam wrote:
Tvisha wrote:
Distinct points A , B , C , D form a right triangle ABC with a height BD. What is the value of AB times BC?

1. AB=6
2. The product of the non-hypotenuse sides is equal to 24

could any one explain this?

I've added the missing text.

Thanks dzyubam for correcting the question.

Answer should be B.
AB*BC = itself is product of non-hypotenuse sides.
_________________

Smiling wins more friends than frowning

Intern
Joined: 24 Sep 2008
Posts: 4
Followers: 0

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

Show Tags

02 Oct 2008, 10:10
how do you know AC is the hypotneus?
Intern
Joined: 16 Jul 2008
Posts: 4
Followers: 1

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

Show Tags

02 Oct 2008, 13:03
hi,

I have a small question, If ABC froms a right angled triangle then the height should be either AB or BC or AC, then how did D come into the picture. I think this can be possible only when the point D coincides with any one of A, B or C.

Could you explain if i got this wrong.

Thanks

x2suresh wrote:
dzyubam wrote:
Tvisha wrote:
Distinct points A , B , C , D form a right triangle ABC with a height BD. What is the value of AB times BC?

1. AB=6
2. The product of the non-hypotenuse sides is equal to 24

could any one explain this?

I've added the missing text.

Thanks dzyubam for correcting the question.

Answer should be B.
AB*BC = itself is product of non-hypotenuse sides.
Re: M04-Q12   [#permalink] 02 Oct 2008, 13:03

Go to page    1   2   3   4   5    Next  [ 94 posts ]

Similar topics Replies Last post
Similar
Topics:
26 m04, Q 15 22 29 Oct 2008, 22:59
3 m04 #24 24 09 Oct 2008, 15:47
7 M04 #1 26 22 Sep 2008, 19:48
30 M04 # 32 15 22 Sep 2008, 19:43
3 m04 Q23 12 14 Sep 2008, 06:12
Display posts from previous: Sort by

M04 #12

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

Moderator: Bunuel

 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®.