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

 It is currently 25 Oct 2016, 02:34

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

What s the numerical value of 1/a + 1/b + 1/c ? 1) a+b+c =

Author Message
Manager
Joined: 24 Jun 2003
Posts: 91
Location: Moscow
Followers: 1

Kudos [?]: 4 [0], given: 0

What s the numerical value of 1/a + 1/b + 1/c ? 1) a+b+c = [#permalink]

Show Tags

05 Aug 2003, 05:12
00:00

Difficulty:

(N/A)

Question Stats:

100% (00:00) correct 0% (00:00) wrong based on 1 sessions

HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

What s the numerical value of 1/a + 1/b + 1/c ?

1) a+b+c = 1;
2) abc = 1.
Intern
Joined: 29 Jul 2003
Posts: 1
Followers: 0

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

Show Tags

05 Aug 2003, 10:48
I might be falling for the Joe Bloggs answer here but:
C

given (2) gives us a common denominator if we were to require adding 1/each = 1
and (1) gives us the derived numerator = 1
Thus we have 1/1 as the answer.
Manager
Joined: 22 Jul 2003
Posts: 62
Location: CA
Followers: 1

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

Show Tags

05 Aug 2003, 11:16
how did u get the derived numerator as a+b+c? Shouldn't it be ab+bc+ca?
Manager
Joined: 22 Jul 2003
Posts: 62
Location: CA
Followers: 1

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

Show Tags

05 Aug 2003, 21:03
I will vote with Prashant.
E. None of the conditions are sufficient.
Manager
Joined: 07 Jul 2003
Posts: 56
Followers: 1

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

Show Tags

05 Aug 2003, 21:19
E. I tryed different numbers and got different answers.
Manager
Joined: 24 Jun 2003
Posts: 91
Location: Moscow
Followers: 1

Kudos [?]: 4 [0], given: 0

Show Tags

06 Aug 2003, 02:44
Konstantin Lynov wrote:
What s the numerical value of 1/a + 1/b + 1/c ?

1) a+b+c = 1;
2) abc = 1.

Solution: Let's simplify the equation first. This leads us to (bc+ac+ab)/abc;
Neither statement one, not two gives us sufficient info to find values for the given equation. Combining two statements together, we get three variables and only two equations. Thus, E is the correct answer.
_________________

Respect,

KL

Re: DS practice #4   [#permalink] 06 Aug 2003, 02:44
Display posts from previous: Sort by