 It is currently 20 Mar 2019, 19:29 ### 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

#### Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here. # Both P and Q are positive numbers, and S is a negative numbe  Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS: Director  Joined: 07 Jan 2018
Posts: 598
Followers: 7

Kudos [?]: 538  , given: 88

Both P and Q are positive numbers, and S is a negative numbe [#permalink]
1
KUDOS 00:00

Question Stats: 85% (00:23) correct 14% (00:00) wrong based on 7 sessions
Both P and Q are positive numbers, and S is a negative number. Which of the following fractions could be undefined?

A. $$\frac{P}{(Q + S)}$$

B. $$\frac{Q}{(P + S)}$$

C. $$\frac{S}{(P + Q)}$$

D. $$\frac{Q}{(S - P)}$$

E. $$\frac{S}{(P - Q)}$$
[Reveal] Spoiler: OA

Last edited by Carcass on 14 Jun 2018, 09:08, edited 1 time in total.
Formatted Intern Joined: 02 May 2018
Posts: 45
Followers: 0

Kudos [?]: 28  , given: 17

Re: Both P and Q are positive numbers, and S is a negative numbe [#permalink]
1
KUDOS
I'll try to word this as clearly as I can.

For a fraction to be undefined, the denominator must be 0. In the question given to us, we do not have exact numbers, only that P & Q are positive and S is negative. This means we want to look for something like $$(P+S)$$ and $$(Q+S)$$. Looking at the answers, we see A and B follow this trend.

However, we are missing one more answer. The question never states that P & Q are two different numbers, meaning $$(P-Q)$$ or $$(Q-P)$$ is an additional possibility. Again, looking at the answers, we see that E fits as well.

The answers are A,B & E. Re: Both P and Q are positive numbers, and S is a negative numbe   [#permalink] 16 Jun 2018, 13:07
Display posts from previous: Sort by

# Both P and Q are positive numbers, and S is a negative numbe  Question banks Downloads My Bookmarks Reviews Important topics Powered by phpBB © phpBB Group Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.